APA (7th ed.) Zitazioa

Ryberg-Webster. Legacy Cities. University of Pittsburgh Press.

Chicago Style (17th ed.) Zitazioa

Ryberg-Webster. Legacy Cities. University of Pittsburgh Press.

MLA (9th ed.) Zitazioa

Ryberg-Webster. Legacy Cities. University of Pittsburgh Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.