The Cite extension to MediaWiki provides a way for wiki editors to add references and footnotes to articles.
See [mw:Extension:Cite] for technical documentation on installing and configuring the extension. See [mw:Help:Cite] for user documentation.
Cite is responsible for implementing the `<ref>` and `<references>` tags in wikitext. Integrations are provided for the legacy wikitext parser, Parsoid, WikiEditor, VisualEditor, and the reading interface.
[mw:Extension:Cite]: https://www.mediawiki.org/wiki/Special:MyLanguage/Extension:Cite
[mw:Help:Cite]: https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Cite