Citation Unit

http://lila-erc.eu/ontologies/lila_corpora/citationUnit an entity of type: Class

A citation unit is a segment of text of various length that is identified by a canonical citation or a component thereof.
Citation Unit 
E.g.: in Verg. Aen 1.10 both (book) "1" and (line) "10" are instances of citation units. 

data from the linked data cloud