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Available in 8 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-8" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">8 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%88%D9%8A%D9%83%D9%8A%D8%A8%D9%8A%D8%AF%D9%8A%D8%A7:%D9%84%D8%A7_%D8%AF%D8%A7%D8%B9%D9%8A_%D9%84%D8%AA%D9%88%D8%AB%D9%8A%D9%82_%D8%A7%D9%84%D8%A8%D8%AF%D9%8A%D9%87%D9%8A%D8%A7%D8%AA" title="ويكيبيديا:لا داعي لتوثيق البديهيات – Arabic" lang="ar" hreflang="ar" data-title="ويكيبيديا:لا داعي لتوثيق البديهيات" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%ED%95%98%EB%8A%98%EC%9D%B4_%ED%8C%8C%EB%9E%97%EB%8B%A4%EB%8A%94_%EA%B2%83%EC%9D%84_%EC%9D%B8%EC%9A%A9%ED%95%A0_%ED%95%84%EC%9A%94%EB%8A%94_%EC%97%86%EC%8A%B5%EB%8B%88%EB%8B%A4" title="위키백과:하늘이 파랗다는 것을 인용할 필요는 없습니다 – Korean" lang="ko" hreflang="ko" data-title="위키백과:하늘이 파랗다는 것을 인용할 필요는 없습니다" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Wikipedia:%E7%A9%BA%E3%81%8C%E9%9D%92%E3%81%84%E3%81%A8%E3%81%84%E3%81%86%E3%81%93%E3%81%A8%E3%81%AB%E5%87%BA%E5%85%B8%E3%81%AF%E8%A6%81%E3%82%89%E3%81%AA%E3%81%84" title="Wikipedia:空が青いということに出典は要らない – Japanese" lang="ja" hreflang="ja" data-title="Wikipedia:空が青いということに出典は要らない" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Wikip%C3%A9dia:N%C3%A3o_%C3%A9_preciso_citar_que_o_c%C3%A9u_%C3%A9_azul" title="Wikipédia:Não é preciso citar que o céu é azul – Portuguese" lang="pt" hreflang="pt" data-title="Wikipédia:Não é preciso citar que o céu é azul" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue" title="Wikipedia:You don't need to cite that the sky is blue – Simple English" lang="en-simple" hreflang="en-simple" data-title="Wikipedia:You don't need to cite that the sky is blue" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%88%DB%8C%DA%A9%DB%8C%D9%BE%DB%8C%D8%AF%DB%8C%D8%A7:%D9%BE%DB%8E%D9%88%DB%8C%D8%B3%D8%AA_%D9%86%D8%A7%DA%A9%D8%A7%D8%AA_%D8%A6%D8%A7%D9%85%D8%A7%DA%98%DB%95_%D8%A8%DB%95%D9%88%DB%95_%D8%A8%D8%AF%DB%95%DB%8C%D8%AA_%DA%A9%DB%95_%D8%A6%D8%A7%D8%B3%D9%85%D8%A7%D9%86_%D8%B4%DB%8C%D9%86%DB%95" title="ویکیپیدیا:پێویست ناکات ئاماژە بەوە بدەیت کە ئاسمان شینە – Central Kurdish" lang="ckb" hreflang="ckb" data-title="ویکیپیدیا:پێویست ناکات ئاماژە بەوە بدەیت کە ئاسمان شینە" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Vikipedi:G%C3%B6ky%C3%BCz%C3%BCn%C3%BCn_mavi_oldu%C4%9Funu_belirtmene_gerek_yok" title="Vikipedi:Gökyüzünün mavi olduğunu belirtmene gerek yok – Turkish" lang="tr" hreflang="tr" data-title="Vikipedi:Gökyüzünün mavi olduğunu belirtmene gerek yok" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/Wikipedia:%E5%AD%99%E4%B8%AD%E5%B1%B1%E6%98%AF%E7%94%B7%E6%80%A7%E6%97%A0%E9%A1%BB%E5%BC%95%E7%94%A8" title="Wikipedia:孙中山是男性无须引用 – Chinese" lang="zh" hreflang="zh" data-title="Wikipedia:孙中山是男性无须引用" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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The present address (URL) is a <a href="/wiki/Help:Permanent_link" title="Help:Permanent link">permanent link</a> to this version.</b></p><div id="revision-info-current-plain" style="display: none;">Revision as of 21:22, 16 August 2024 by <a href="/wiki/User:Win8x" class="mw-userlink" title="User:Win8x" data-mw-revid="1240701240"><bdi>Win8x</bdi></a> <span class="mw-usertoollinks">(<a href="/wiki/User_talk:Win8x" class="mw-usertoollinks-talk" title="User talk:Win8x">talk</a> | <a href="/wiki/Special:Contributions/Win8x" class="mw-usertoollinks-contribs" title="Special:Contributions/Win8x">contribs</a>)</span> <span class="comment">(Reverted 1 edit by <a href="/wiki/Special:Contributions/2A02:C7C:F477:A900:FD29:761D:6715:6ED3" title="Special:Contributions/2A02:C7C:F477:A900:FD29:761D:6715:6ED3">2A02:C7C:F477:A900:FD29:761D:6715:6ED3</a> (<a href="/wiki/User_talk:2A02:C7C:F477:A900:FD29:761D:6715:6ED3" title="User talk:2A02:C7C:F477:A900:FD29:761D:6715:6ED3">talk</a>) to last revision by Orchastrattor)</span></div></div><div id="mw-revision-nav">(<a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&diff=prev&oldid=1240701240" title="Wikipedia:You don't need to cite that the sky is blue">diff</a>) <a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&direction=prev&oldid=1240701240" title="Wikipedia:You don't need to cite that the sky is blue">← Previous revision</a> | Latest revision (diff) | Newer revision → (diff)</div></div></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"WP:BLUE" redirects here. For the blue link color, see <a href="/wiki/Help:Link_color" title="Help:Link color">Help:Link color</a>. For the guideline about two or more adjacent links, see <a href="/wiki/MOS:SEAOFBLUE" class="mw-redirect" title="MOS:SEAOFBLUE">MOS:SEAOFBLUE</a>.</div> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Essay on editing Wikipedia</div><style data-mw-deduplicate="TemplateStyles:r1238436933">.mw-parser-output .ombox{margin:4px 0;border-collapse:collapse;border:1px solid #a2a9b1;background-color:var(--background-color-neutral-subtle,#f8f9fa);box-sizing:border-box;color:var(--color-base,#202122)}.mw-parser-output .ombox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .ombox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .ombox-delete{border:2px solid #b32424}.mw-parser-output .ombox-content{border:1px solid #f28500}.mw-parser-output .ombox-style{border:1px solid #fc3}.mw-parser-output .ombox-move{border:1px solid #9932cc}.mw-parser-output .ombox-protection{border:2px solid #a2a9b1}.mw-parser-output .ombox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .ombox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .ombox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .ombox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ombox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .ombox{margin:4px 10%}.mw-parser-output .ombox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}body.skin--responsive .mw-parser-output table.ombox img{max-width:none!important}@media screen{html.skin-theme-clientpref-night .mw-parser-output .ombox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .ombox-speedy{background-color:#310402}}</style><table class="plainlinks ombox ombox-notice" role="presentation"><tbody><tr><td class="mbox-image"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Essay.svg/30px-Essay.svg.png" decoding="async" width="30" height="36" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Essay.svg/45px-Essay.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Essay.svg/60px-Essay.svg.png 2x" data-file-width="35" data-file-height="42"/></span></span></td><td class="mbox-text"><div style="padding-top: 6px; padding-bottom: 5px;"><b>This is an <a href="/wiki/Wikipedia:Essays" title="Wikipedia:Essays">essay</a>.</b><br/><div style="font-size: 90%;">It contains the advice or opinions of one or more Wikipedia contributors. This page is not an encyclopedia article, nor is it one of <a href="/wiki/Wikipedia:Policies_and_guidelines" title="Wikipedia:Policies and guidelines">Wikipedia's policies or guidelines</a>, as it has not been <a href="/wiki/Wikipedia:Consensus#Levels_of_consensus" title="Wikipedia:Consensus">thoroughly vetted by the community</a>. Some essays represent widespread norms; others only represent minority viewpoints.</div></div></td><td class="mbox-imageright"><style data-mw-deduplicate="TemplateStyles:r1252059228">.mw-parser-output .module-shortcutboxplain{float:right;margin:0 0 0 1em;border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-base,#fff);padding:0.3em 0.6em 0.2em 0.6em;text-align:center;font-size:85%}.mw-parser-output .module-shortcutboxleft{float:left;margin:0 1em 0 0}.mw-parser-output .module-shortcutlist{display:inline-block;border-bottom:1px solid var(--border-color-base,#a2a9b1);margin-bottom:0.2em}.mw-parser-output .module-shortcutboxplain ul{font-weight:bold}.mw-parser-output .module-shortcutanchordiv{position:relative;top:-3em}.mw-parser-output li .module-shortcutanchordiv{float:right}.mw-parser-output .mbox-imageright .module-shortcutboxplain{padding:0.4em 1em 0.4em 1em;line-height:1.3;margin:0}</style><div class="module-shortcutanchordiv"><span id="WP:FACTS"></span><span id="WP:BLUE"></span><span id="WP:BLUESKY"></span><span id="WP:OBV"></span><span id="WP:SKYBLUE"></span></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:FACTS&redirect=no">WP:FACTS</a></span></li><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:BLUE&redirect=no">WP:BLUE</a></span></li><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:BLUESKY&redirect=no">WP:BLUESKY</a></span></li><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:OBV&redirect=no">WP:OBV</a></span></li><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:SKYBLUE&redirect=no">WP:SKYBLUE</a></span></li></ul></div></div></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238436933"><table class="plainlinks ombox ombox-notice nutshell" role="presentation"><tbody><tr><td class="mbox-image"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Walnut.png/30px-Walnut.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Walnut.png/45px-Walnut.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Walnut.png/60px-Walnut.png 2x" data-file-width="192" data-file-height="192"/></span></span></td><td class="mbox-text"><b>This page in a nutshell:</b> Although <a href="/wiki/Wikipedia:Cite_your_sources" class="mw-redirect" title="Wikipedia:Cite your sources">citing sources</a> is an important part of editing Wikipedia, there is no need to cite information that is already obvious.</td></tr></tbody></table> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Zygaena_filipendulae_on_Avena_sativa.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Zygaena_filipendulae_on_Avena_sativa.jpg/220px-Zygaena_filipendulae_on_Avena_sativa.jpg" decoding="async" width="220" height="330" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Zygaena_filipendulae_on_Avena_sativa.jpg/330px-Zygaena_filipendulae_on_Avena_sativa.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Zygaena_filipendulae_on_Avena_sativa.jpg/440px-Zygaena_filipendulae_on_Avena_sativa.jpg 2x" data-file-width="2000" data-file-height="3000"/></a><figcaption>Which of these things needs a citation?</figcaption></figure> <p><a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">Verifiability</a> is an important and core policy of Wikipedia. Article content should be backed up by <a href="/wiki/Wikipedia:Identifying_reliable_sources" class="mw-redirect" title="Wikipedia:Identifying reliable sources">reliable sources</a> wherever needed to show that the presentation of material on Wikipedia is consistent with the views that are presented in scholarly discourse or the world at large. Such sources help to improve the encyclopedia. </p><p>However, many editors misunderstand the citation policy, seeing it as a tool to enforce, reinforce, or cast doubt upon a particular point of view in a content dispute, rather than as a means to verify Wikipedia's information. This can lead to several forms of mildly <a href="/wiki/Wikipedia:Disruptive_editing" title="Wikipedia:Disruptive editing">disruptive editing</a> which are better avoided. Ideally, <a href="/wiki/Wikipedia:What_%22Ignore_all_rules%22_means#Use_common_sense" title="Wikipedia:What "Ignore all rules" means">common sense</a> would always be applied, but site history shows this is unrealistic. Therefore, this essay gives some practical advice. </p><p>Not citing common knowledge and not providing bibliographic entries for very famous works is also consistent with major academic <a href="/wiki/Style_guide" title="Style guide">style guides</a>, such as <i><a href="/wiki/The_MLA_Style_Manual" class="mw-redirect" title="The MLA Style Manual">The MLA Style Manual</a></i> and the <a href="/wiki/APA_style_guide" class="mw-redirect" title="APA style guide">APA style guide</a>. </p><p>Since all material that is either <a href="/wiki/Wikipedia:Challenged" class="mw-redirect" title="Wikipedia:Challenged">challenged</a> or <a href="/wiki/Wikipedia:LIKELY" class="mw-redirect" title="Wikipedia:LIKELY">likely to be challenged</a> must be cited, if someone else is already challenging material as false or misleading, then it needs an <a href="/wiki/Wikipedia:Inline_citation" title="Wikipedia:Inline citation">inline citation</a>. Remember to <a href="/wiki/Wikipedia:AGF" class="mw-redirect" title="Wikipedia:AGF">assume good faith</a> and consider that something that may be obvious to you <a href="/wiki/Wikipedia:RANDY" class="mw-redirect" title="Wikipedia:RANDY">may not be obvious to them</a>, and that many things that "everyone knows" <a href="/wiki/List_of_common_misconceptions" title="List of common misconceptions">turn out to be false</a>. </p> <meta property="mw:PageProp/toc"/> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Pedantry,_and_other_didactic_arguments" data-mw-thread-id="h-Pedantry,_and_other_didactic_arguments"><span id="Pedantry.2C_and_other_didactic_arguments"></span><span data-mw-comment-start="" id="h-Pedantry,_and_other_didactic_arguments"></span>Pedantry, and other didactic arguments<span data-mw-comment-end="h-Pedantry,_and_other_didactic_arguments"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=1" title="Edit section: Pedantry, and other didactic arguments"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"><span id="WP:PEDANTRY"></span></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span class="plainlinks"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:PEDANTRY&redirect=no">WP:PEDANTRY</a></span></li></ul></div></div> <p>Sometimes editors will insist on citations for material simply because they dislike it or prefer some other material, not because the material in any way needs verification. For example, an editor may demand a citation to verify that most people have five digits on each hand.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Another may insist that the color of the sky is <em>aqua</em> rather than <em>blue</em>, while providing spectroscopic analyses as part of an assortment of verifiable evidence to support their position. Simultaneously, they demand that other editors show equivalent support in reliable sources for the claim that the sky is <em>in fact</em> blue. While there are times when this insistent attention to detail is useful or necessary, it is often simply disruptive and can be dismissed, as there is no need to verify statements that are obvious. Additional claims besides the obvious ones may merit inclusion according to site policies and guidelines, but they should in no way be given greater prominence because they happen to be sourced. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Over-tagging" data-mw-thread-id="h-Over-tagging"><span data-mw-comment-start="" id="h-Over-tagging"></span>Over-tagging<span data-mw-comment-end="h-Over-tagging"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=2" title="Edit section: Over-tagging"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Wikipedia has several templates for tagging material that needs verification: inline templates for particular lines, section templates, and article templates. See <a href="/wiki/Wikipedia:Template_messages" class="mw-redirect" title="Wikipedia:Template messages">Wikipedia:Template messages</a>. Sometimes editors will go through an article and add dozens of the inline tags, along with several section and article tags, making the article essentially unreadable (see <a href="/wiki/Wikipedia:TAGBOMBING" class="mw-redirect" title="Wikipedia:TAGBOMBING">WP:TAGBOMBING</a>). As a rule, if there are more than 2 or 3 inline tags they should be removed and replaced with a section tag; if there are more than 2 section tags in a section they should be removed and replaced with a single '<a href="/wiki/Template:Multiple_issues" title="Template:Multiple issues">Multiple issues</a>' tag. If there are more than two or three sections tagged, those tags should be removed, and the entire article should be tagged. </p><p>Verification tags should not be used in a <a href="/wiki/Wikipedia:Do_not_disrupt_Wikipedia_to_illustrate_a_point" title="Wikipedia:Do not disrupt Wikipedia to illustrate a point">POINTed</a> fashion. Use only those tags necessary to illustrate the problem, and discuss the matter in detail on the talk page. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Over-citing" data-mw-thread-id="h-Over-citing"><span data-mw-comment-start="" id="h-Over-citing"></span>Over-citing<span data-mw-comment-end="h-Over-citing"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=3" title="Edit section: Over-citing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Wikipedia:Citation_overkill" title="Wikipedia:Citation overkill">Wikipedia:Citation overkill</a> and <a href="/wiki/Wikipedia:Citation_underkill#Overciting_content" title="Wikipedia:Citation underkill">Wikipedia:Citation underkill § Overciting content</a></div> <p>Citations should be evaluated on the qualities they bring to the article, not on the quantity of citations available. The first 1 or 2 citations supporting a given point are informative; extra citations after that begin to be argumentative. Keep in mind that the purpose of a citation is to guide the reader to external sources where the reader can verify the idea presented, not to prove to other editors the strength of the idea. Extra sources for the same idea should be added to '<a href="/wiki/Wikipedia:Manual_of_Style/Layout#Further_reading" title="Wikipedia:Manual of Style/Layout">Further Reading</a>', '<a href="/wiki/Wikipedia:Manual_of_Style/Layout#"See_also"_section" title="Wikipedia:Manual of Style/Layout">See Also</a>' or '<a href="/wiki/Wikipedia:Manual_of_Style/Layout#External_links" title="Wikipedia:Manual of Style/Layout">External Sources</a>' sections at the bottom of the page, without explicitly being cited in the text. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="See_also" data-mw-thread-id="h-See_also"><span data-mw-comment-start="" id="h-See_also"></span>See also<span data-mw-comment-end="h-See_also"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading4"><h4 id="Wikipedia_guidelines" data-mw-thread-id="h-Wikipedia_guidelines-See_also"><span data-mw-comment-start="" id="h-Wikipedia_guidelines-See_also"></span>Wikipedia guidelines<span data-mw-comment-end="h-Wikipedia_guidelines-See_also"></span></h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=5" title="Edit section: Wikipedia guidelines"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Wikipedia:No_original_research#Routine_calculations" title="Wikipedia:No original research">Wikipedia:No original research § Routine calculations</a></li> <li><a href="/wiki/Wikipedia:Common_knowledge" title="Wikipedia:Common knowledge">Wikipedia:Common knowledge</a></li> <li><a href="/wiki/Wikipedia:When_to_cite#When_a_source_may_not_be_needed" title="Wikipedia:When to cite">Wikipedia:When to cite § When a source may not be needed</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Linking#What_generally_should_not_be_linked" title="Wikipedia:Manual of Style/Linking">Wikipedia:Manual of Style/Linking § What generally should not be linked</a></li></ul> <div class="mw-heading mw-heading4"><h4 id="Wikipedia_user_essays" data-mw-thread-id="h-Wikipedia_user_essays-See_also"><span data-mw-comment-start="" id="h-Wikipedia_user_essays-See_also"></span>Wikipedia user essays<span data-mw-comment-end="h-Wikipedia_user_essays-See_also"></span></h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=6" title="Edit section: Wikipedia user essays"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Wikipedia:You_do_need_to_cite_that_the_sky_is_blue" title="Wikipedia:You do need to cite that the sky is blue">Wikipedia:You <i>do</i> need to cite that the sky is blue</a>, the opposing essay</li> <li><a href="/wiki/Wikipedia:Likely_to_be_challenged" title="Wikipedia:Likely to be challenged">Wikipedia:Likely to be challenged</a></li> <li><a href="/wiki/Wikipedia:Must_I_add_a_citation%3F" title="Wikipedia:Must I add a citation?">Wikipedia:Must I add a citation?</a></li> <li><a href="/wiki/Wikipedia:The_Pope_is_Catholic" title="Wikipedia:The Pope is Catholic">Wikipedia:The Pope is Catholic</a></li> <li><a href="/wiki/Wikipedia:Don%27t_be_a_WikiBigot" title="Wikipedia:Don't be a WikiBigot">Wikipedia:Don't be a WikiBigot</a></li> <li><a href="/wiki/User:Uncle_G/On_sources_and_content#There_are_no_exceptions_to_everything" title="User:Uncle G/On sources and content">User:Uncle G/On sources and content § There are no exceptions to everything</a></li> <li><a href="/wiki/Wikipedia:Wisps%27_Law" title="Wikipedia:Wisps' Law">Wikipedia:Wisps' Law</a></li> <li><a href="/wiki/Wikipedia:Why_most_sentences_should_be_cited" title="Wikipedia:Why most sentences should be cited">Wikipedia:Why most sentences should be cited</a></li> <li><a href="/wiki/Wikipedia:You_don%27t_need_a_weatherman_to_know_which_way_the_wind_blows" title="Wikipedia:You don't need a weatherman to know which way the wind blows">Wikipedia:You don't need a weatherman to know which way the wind blows</a></li> <li><a href="/wiki/Wikipedia:Verifiability,_not_truth" title="Wikipedia:Verifiability, not truth">Wikipedia:Verifiability, not truth</a>, for when a reliable source claims the sky is bright green</li></ul> <div class="mw-heading mw-heading4"><h4 id="Related_articles" data-mw-thread-id="h-Related_articles-See_also"><span data-mw-comment-start="" id="h-Related_articles-See_also"></span>Related articles<span data-mw-comment-end="h-Related_articles-See_also"></span></h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wikipedia:You_don%27t_need_to_cite_that_the_sky_is_blue&action=edit&section=7" title="Edit section: Related articles"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Judicial_notice" title="Judicial notice">Judicial notice</a>, a legal rule that allows irrefutable, well-known facts to be introduced into evidence</li> <li><a href="/wiki/Argumentum_ad_populum" title="Argumentum ad populum">Argumentum ad populum</a></li> <li><a href="/wiki/Common_knowledge" title="Common knowledge">Common knowledge</a></li></ul> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Notes" data-mw-thread-id="h-Notes"><span data-mw-comment-start="" id="h-Notes"></span>Notes<span data-mw-comment-end="h-Notes"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a 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