Cita APA (7th ed.)

Duiker, W. J. (2010). Contemporary world history (5th ed.). Wadsworth, Cengage Learning.

Cita Chicago (17th ed.)

Duiker, William J. Contemporary World History. 5th ed. Boston: Wadsworth, Cengage Learning, 2010.

Cita MLA (9th ed.)

Duiker, William J. Contemporary World History. 5th ed. Wadsworth, Cengage Learning, 2010.