Perry, M. (2011). Western civilization: A brief history (7th ed., International ed.). Wadsworth/Cengage Learning.
Chicago Style aipamenaPerry, Marvin. Western Civilization: A Brief History. 7th ed., International ed. Australia: Wadsworth/Cengage Learning, 2011.
MLA aipamenaPerry, Marvin. Western Civilization: A Brief History. 7th ed., International ed. Wadsworth/Cengage Learning, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.