APA aipamena

Meacham, S., Lerner, R. E., & Ralph, P. L. (1997). World civilizations (9th ed.). New York: W. W. Norton.

Chicago Style aipamena

Meacham, Standish., Robert E. Lerner, và Philip Lee Ralph. World Civilizations. 9th ed. New York: W. W. Norton, 1997.

MLA aipamena

Meacham, Standish., Robert E. Lerner, và Philip Lee Ralph. World Civilizations. 9th ed. New York: W. W. Norton, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.