Cita APA

Duiker, W. J., & Spielvogel, J. J. (2010). World history (6th ed.). Wadsworth Cengage Learning.

Citación estilo Chicago

Duiker, William J., and Jackson J. Spielvogel. World History. 6th ed. Boston, MA: Wadsworth Cengage Learning, 2010.

Cita MLA

Duiker, William J., and Jackson J. Spielvogel. World History. 6th ed. Wadsworth Cengage Learning, 2010.