APA-referens (7:e uppl.)

West, W. M. (1927). The story of world progress. Allyn and Bacon.

Chicago-referens (17:e uppl.)

West, Willis M. The Story of World Progress. Boston ; New York [etc.]: Allyn and Bacon, 1927.

MLA-referens (8:e uppl.)

West, Willis M. The Story of World Progress. Allyn and Bacon, 1927.