Op. cit. is an abbreviation of the Latin phraseopus citatum or opere citato,[1] meaning "the work cited" or in the cited work, respectively.[1]
^ abFisher Saller, Carol; Harper, Russell David, eds. (2010). "14.31: Op. cit. and loc. cit.". The Chicago Manual of Style (16th ed.). Chicago: Univiversity of Chicago Press. p. 670. ISBN978-0-226-10420-1.