APA (7th ed.) Citation

Duiker, W. J. (2007). Twentieth-century world history (4th ed.). Thomson Wadsworth.

Chicago Style (17th ed.) Citation

Duiker, William J. Twentieth-century World History. 4th ed. Belmont, Calif: Thomson Wadsworth, 2007.

MLA (9th ed.) Citation

Duiker, William J. Twentieth-century World History. 4th ed. Thomson Wadsworth, 2007.