{{Citation needed}} is atemplate used to identify claims in articles, particularly if questionable, that need acitation to areliable source. This template produces the superscripted message [未記出處或冇根據] and is installed with no spaces directly after punctuation.
The|date= parameter consists of the full English name of the current month (with initial capital and rest lowercase), a space, and the year. For example, "January 2013" but not "jan13" or "January 23, 2013". Deviation from this rule will place the article inCategory:Articles with invalid date parameter in template.
To automatically add the current date, you can usesubstitution like this:{{subst:Citation needed}}.
If the|date= parameter is not given, abot will soon add it (AnomieBOT's TagDater task) but it's better if you add it yourself to avoid an extra edit to the article's history.
The|reason= parameter is for an explanation why you think the material needs a source. It is optional but very helpful. It is displayed as atooltip in some browsers (hover the mouse here[未記出處或冇根據] to check behaviour of your browser). For example, the following usage might be appropriate to the claim that "Humphrey Bogart was an avid snooker player":
{{Citation needed|reason=This claim needs a reliable source; Bogart was a famous actor but his major biographies don't mention snooker.|date=11月 2025}}
Use onlyplain text for the|reason= parameter. It does not supportwiki markup like wikilinks, which can mess up the tooltip.
Double quotation marks used within the|reason= parameter will likewise mess up the tooltip; use single quotes or the HTML code" instead.
If omitted, the tooltip "This claim needs references to reliable sources." is used by default.
This template should usually be installed directlyafter punctuation, such as a full stop (period) or a comma.
[[Humphrey Bogart]] was an avid snooker player.{{Citation needed|date=11月 2025}}
The template indicates that it may be that Humphrey Bogart played snooker at some point and it may be that he was enthusiastic about the game but noreliable,published sources were given to verify it and the information is not consideredcommon knowledge.
If it is considered that he might have played snooker but was not an avid player, a reason for the need of a citation may be given, displayed as a tooltip when the mouse hovers on "citation needed":
[[Humphrey Bogart]] was an avid snooker player.{{Citation needed|date=11月 2025|reason=Only aware he was photographed playing once. Not aware of any source that claims he played a lot.}}
The {{Citation needed}} template is intended for use when there is a general question of the verifiability of a statement, or when an editor believes that a reference verifying the statement should be provided. Other templates are available for other or more specific issues; see thelist of inline templates. For example, claims that you think are incorrect should be tagged with {{Dubious}}, and those which represent a non-neutral view should be tagged with {{POV statement}}. Being specific about the nature of the problem will help other editors correct it.
Within alead section that is clearly written as a summary of a substantially sourced article,
statements that are supported with citations within the body of the article should not be tagged,
statements that are not supported in the article body should be tagged with {{Not verified in body}}.
If you have the time and ability to find an authoritative reference, please do so. Then add the citation yourself, or correct the article text. After all, the ultimate goal is not to merely identify problems, but to fix them.
While an editor may add this template to any uncited passage for any reason, many editors object to what they perceive as overuse of this tag, particularly in what is known as "drive-by" tagging, which is applying the tag without attempting to address the issues at all. Consider whether adding this tag in an article is the best approach before using it, and use it judiciously. Wikipedia'sverifiability policy does not require reliable sources forcommon well-known facts (e.g., "the Moon orbits the Earth"), neither that citations be repeated through every sentence in a paragraph. All direct quotations and facts whose accuracy might be challenged (e.g., statistics) require citations. SeeWP:MINREF for the list of material that is absolutely required to be followed by aninline citation, rather than ageneral reference or no citation at all. Also note that theburden of evidence lies with the editor who adds or restores material.
This template is intended for specific passages that need citation. For entire articles or sections that contain significant material lacking citations (rather than just specific short passages), there are other, more appropriate templates, such as {{Unreferenced}} and {{More citations needed}} (for whole articles) as well as {{Unreferenced section}} and {{More citations needed section}} (for sections of articles).
Do not use this template to tag policies or guidelines.
The addition of this tag is a request for an inline citation to support the tagged statement. If you are able to provide a citation to support the claim, then please do so.
Except forcontentious claims about living people, which should be immediately removed if not cited, there is no specific deadline for providing citations. Please do not delete information that you believe is correct solely because no one has provided a citation within an arbitrary time limit. If there is some uncertainty about its accuracy, most editors are willing to wait at least a month to see whether a citation can be provided.
{{Citation needed span}}: similar, except that the text needing the citation is changed to a dark slate-gray color while being encapsulated in an off-white box with a pale pink outline. For example:
{{According to whom}}Template:According to whom: flag a vague, unreferenced, third-party claim with no specific, identifiable individuals or groups named who could verify the claim.
{{By whom}}Template:By whom: flag a statement that has a claim by a third party who is not well identified and/or well sourced.
