APA (7th ed.) Zitazioa

Krollos. Big City. The University of Alabama Press.

Chicago Style (17th ed.) Zitazioa

Krollos. Big City. The University of Alabama Press.

MLA (9th ed.) Zitazioa

Krollos. Big City. The University of Alabama Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.