APA-referens (7:e uppl.)

Loucks, W. N. (1957). Comparative economic systems (5th ed.). Harper.

Chicago-referens (17:e uppl.)

Loucks, William Negele. Comparative Economic Systems. 5th ed. New York: Harper, 1957.

MLA-referens (9:e uppl.)

Loucks, William Negele. Comparative Economic Systems. 5th ed. Harper, 1957.