• id: A unique identifier, used where none of the specialized identifiers are applicable; wikilink or use an external link template as applicable. For example, <syntaxhighlight lang="wikitext" inline style="display: none;" />|id=NCJ 255676 will append "NCJ 255676" at the end of the citation. You can use templates such as <syntaxhighlight lang="wikitext" inline style="display: none;" />|id={{NCJ|255676}} to append NCJ 255676 instead.