APA-referens (7:e uppl.)

Soule, G. (1952). Ideas of the great economists. Mentor book.

Chicago-referens (17:e uppl.)

Soule, George. Ideas of the Great Economists. New York: Mentor book, 1952.

MLA-referens (9:e uppl.)

Soule, George. Ideas of the Great Economists. Mentor book, 1952.