APA-referens (7:e uppl.)

Duiker, W. J. (2005). Twentieth-century world history (3rd. ed.). Belmont, CA. Thomson, Wadsworth.

Chicago-referens (17:e uppl.)

Duiker, William J. Twentieth-century World History. 3rd. ed. Southbank, Victoria, Australia: Belmont, CA. Thomson, Wadsworth, 2005.

MLA-referens (9:e uppl.)

Duiker, William J. Twentieth-century World History. 3rd. ed. Belmont, CA. Thomson, Wadsworth, 2005.