Duiker, W. J. (2010). Contemporary world history (5th ed.). Wadsworth, Cengage Learning.
Citazione stile Chigago Style (17a edizione)Duiker, William J. Contemporary World History. 5th ed. Boston: Wadsworth, Cengage Learning, 2010.
Citatione MLA (9a ed.)Duiker, William J. Contemporary World History. 5th ed. Wadsworth, Cengage Learning, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.