APA (7th ed.) Zitazioa
Kagan, D. (1991). The Western heritage (4th ed.). Prentice Hall.
Chicago Style (17th ed.) Zitazioa
Kagan, Donald. The Western Heritage. 4th ed. New Jersey: Prentice Hall, 1991.
MLA (9th ed.) Zitazioa
Kagan, Donald. The Western Heritage. 4th ed. Prentice Hall, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.