APA (7th ed.) Zitazioa

Book History (Pennsylvania State University Press). Pennsylvania State University Press.

Chicago Style (17th ed.) Zitazioa

Book History (Pennsylvania State University Press). Pennsylvania State University Press.

MLA (9th ed.) Zitazioa

Book History (Pennsylvania State University Press). Pennsylvania State University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.