Cita APA (7th ed.)
Greaves, R. L., & Zaller, R. (1997). Civilizations of the world: The human adventure. (3rd.ed.). Longman.
Cita Chicago (17th ed.)
Greaves, Richard L., i Robert Zaller. Civilizations of the World: The Human Adventure. 3rd.ed. New York: Longman, 1997.
Cita MLA (9th ed.)
Greaves, Richard L., i Robert Zaller. Civilizations of the World: The Human Adventure. 3rd.ed. Longman, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.