APA (7th ed.) Zitazioa
Mulac, C. (2012). Fundamentals of reference. American Library Association.
Chicago Style (17th ed.) Zitazioa
Mulac, Carolyn. Fundamentals of Reference. Chicago, Ill.: American Library Association, 2012.
MLA (9th ed.) Zitazioa
Mulac, Carolyn. Fundamentals of Reference. American Library Association, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.