APA (7th ed.) Zitazioa

Lenski. Constantine and the Cities. University of Pennsylvania Press.

Chicago Style (17th ed.) Zitazioa

Lenski. Constantine and the Cities. University of Pennsylvania Press.

MLA (9th ed.) Zitazioa

Lenski. Constantine and the Cities. University of Pennsylvania Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.