APA-referens (7:e uppl.)

Young, E. W. (1973). The world, physical and human (3rd ed.). E. Arnold.

Chicago-referens (17:e uppl.)

Young, Eric William. The World, Physical and Human. 3rd ed. London: E. Arnold, 1973.

MLA-referens (9:e uppl.)

Young, Eric William. The World, Physical and Human. 3rd ed. E. Arnold, 1973.