Kagan, D. (1996). Western heritage brief: Study guide and work book. Prentice Hall.
Chicago Style (17th ed.) ZitazioaKagan, Donald. Western Heritage Brief: Study Guide and Work Book. New Jersey: Prentice Hall, 1996.
MLA (9th ed.) ZitazioaKagan, Donald. Western Heritage Brief: Study Guide and Work Book. Prentice Hall, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.