A reference tag is a set of tags that allow for linking the reference of a fact to where the fact took place.

Examples:

• <ref>{{c|Batman #1}}</ref>

• <ref>His actual real name is Francis.</ref>

• <ref name="Detective Comics #18">{{c|Detective Comics #18}}</ref>

• <ref>As seen in the now-classic {{c|Blackest Night #40}}, on page 18</ref>