APA (7th ed.) Zitazioa

Willis, F. R. (1987). Western civilization: A belief introduction. Macmillan.

Chicago Style (17th ed.) Zitazioa

Willis, F. Roy. Western Civilization: A Belief Introduction. New York: Macmillan, 1987.

MLA (9th ed.) Zitazioa

Willis, F. Roy. Western Civilization: A Belief Introduction. Macmillan, 1987.