Wikipedia's verifiability policy requires inline citations for any material challenged or likely to be challenged, and for all quotations, anywhere in article space. A citation or reference in an article usually has two parts.

A wiki is a non-traditional medium, and as such doesn't conform well to the usual book-citation formats. Wiki is not paper, so you will need to use an electronic-citation format instead. The exact format will depend upon the citation guide that you are following, but here are a few general principles to consider:

The MLA format for citing Wikipedia includes the following elements: the title of the entry (same as on-page headline), container name, publisher, last updated date, and permalink.

A Wikipedia citation in APA format includes the Wikipedia page title, version date, website, and URL specific to the entry version you’re referencing.

A Wikipedia citation usually includes the title of the article, “Wikipedia” and/or “Wikimedia Foundation,” the date the article was last updated, and the URL. In APA Style, you’ll give the URL of the current revision of the article so that you’re sure the reader accesses the same version as you.