The verb cite appears in epistemic filters and should appear in wiki protocol if only to avoid the inevitable problems of counting every reference as a citation, and every provider of references as a reliable source.
In living ontology, to cite links an argument to evidence from a reliable source. If the source is not known reliable, you don't defer to it, you refer. To cite attaches evidence/source/authority and makes the argument defensible. It's a wiki best practice to do this where possible. In explicitly political public wikis the difference between references to casual and citations of trusted sources may be factionally-defined, rather than fixed. In this case some means to govern and debate credibility would be required.