Usage

This is a variant of ((Citation needed)), used inline in the article where a claim requires an additional source. This most often arises when:

The citation provided is to a weak source (primary, tertiary, vague, low-quality) but the claim is not dubious enough to delete outright, and the imperfect source should be retained, e.g., because it was the first to report on the matter and this is significant.
The claim is one ("several studies demonstrated ...", "various newspapers reported ...", etc.) that requires multiple sources (or a single source, which has not yet been provided, that summarizes multiple prior sources and makes the same multi-source claim Wikipedia is repeating).
The claim is multi-part and the current citation only sources part of it, e.g., "1929–2006^[1]" where the source is a 2005 book that provides the birth date and we have no source yet for the death date.

When not to use this template

If the citation simply needs to be replaced, use ((Better source)).
If there's no source for the claim at all, use ((Citation needed)).
If multiple additional sources are needed for a block of material with multiple claims, do not use this inline template to tag the entire block; either use it to flag specific unsourced statements, or use a block template like ((More citations needed section)) or the article-wide ((More citations needed)).

Abbreviated parameter sets

((Additional citation needed|date= ))

((Additional citation needed|date= |reason= ))

Parameters

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Additional citation needed in articles based on its TemplateData.

TemplateData for Additional citation needed

This template can be used inline where a claim requires one or more additional sources. For example when the claim is one that requires multiple sources ("several studies demonstrated ...", "various newspapers reported ...", etc.)

Template parameters[Edit template data]
This template prefers inline formatting of parameters.
Parameter		Description	Type	Status
Month and year	`date`	Provides the month and year of the additional citation request; e.g., 'January 2013', but not 'jan13' Auto value `((subst:CURRENTMONTHNAME)) ((subst:CURRENTYEAR))`	String	suggested
Reason	`reason`	no description	Line	optional

((By how much)) ((Definition)) ((Definition needed)) ((Example needed)) ((Example needed span)) ((Explain)) ((How)) ((How often)) ((Misquoted)) ((Quantify)) ((Specify)) ((Vague)) ((When)) ((Where)) ((Which)) ((Who else)) ((Why)) ((Year needed))
Excessive	((Duplication span)) ((Importance inline)) ((Relevance inline)) ((Undue weight inline)) ((Globalize inline))

Time-sensitivity

Verifiability

Dubious	((Contradictory inline)) ((Disputed inline)) ((Dubious)) ((Dubious span)) ((Inconsistent)) ((Needs independent confirmation)) ((Speculation inline))
Bare URLs	((Bare URL inline)) ((Bare URL non-HTML)) ((Bare URL AV media)) ((Bare URL PDF)) ((Bare URL image)) ((Bare URL DOC)) ((Bare URL plain text)) ((Bare URL spreadsheet))
Incomplete or broken citation	((Author incomplete)) ((Author missing)) ((Date missing)) ((Dead link)) ((Edition needed)) ((Episode needed)) ((Full citation needed)) ((Incomplete short citation)) ((ISBN missing)) ((Moved resource)) ((Page needed)) ((Place missing)) ((Publisher missing)) ((Season needed)) ((Time needed)) ((Title incomplete)) ((Title missing)) ((Volume needed)) ((Year missing))
Missing or problematic reference	((Additional citation needed)) ((Better source needed)) ((Better source needed example)) ((Check quotation)) ((Chronology citation needed)) ((Citation needed)) ((Citation needed span)) ((Citation not found)) ((Close paraphrasing inline)) ((COI source)) ((Deprecated inline)) ((Excessive citations inline)) ((Failed verification)) ((Failed verification span)) ((Image reference needed)) ((Irrelevant citation)) ((Medical citation needed)) ((Medical citation needed span)) ((Nonspecific)) ((Not verified in body)) ((Obsolete source)) ((Page range too broad)) ((Primary source inline)) ((Promotional source)) ((Quote without source)) ((Request quotation)) ((Request quotation span)) ((Retracted)) ((Scientific citation needed)) ((Self-published inline)) ((Tertiary source inline)) ((Third-party inline)) ((Unreliable fringe source)) ((Unreliable medical source)) ((Unreliable source?)) ((Verify quote)) ((Verify source))

Wording

General advice

The above documentation is transcluded from Template:Additional citation needed/doc.
Editors can experiment in this template's sandbox and testcases pages.
Add categories to the /doc subpage. Subpages of this template.

Usage

When not to use this template

Abbreviated parameter sets

Parameters

See also