Cita APA (7a ed.)

Szemler, G. J., Burns, E. M., Lerner, R. E., & Meacham, S. (1980). Western civilizations: Their history and their culture (9. ed.). Norton.

Cita Chicago Style (17a ed.)

Szemler, G. J., Edward McNall Burns, Robert E. Lerner, y Standish Meacham. Western Civilizations: Their History and Their Culture. 9. ed. New York: Norton, 1980.

Cita MLA (9a ed.)

Szemler, G. J., et al. Western Civilizations: Their History and Their Culture. 9. ed. Norton, 1980.