Lihat sumber Templat:Citation Style documentation/ref2

* '''ref''': ID for anchor. By default, anchors are always generated. The ordinary nonempty value {{para|ref|<var>ID</var>}} generates an anchor with the given <var>ID</var>; such a linkable reference can be made the target of [[Wikipedia:Citing sources/Further considerations#Wikilinks to full references|wikilinks to full references]], especially useful in short citations like [[Wikipedia:Citing sources#Shortened footnotes|shortened notes]] and [[Wikipedia:Parenthetical referencing|parenthetical referencing]].