APA-referens (7:e uppl.)

Gray, A. (1961). The development of economic doctrine. John Wiley & Sons.

Chicago-referens (17:e uppl.)

Gray, Alexander. The Development of Economic Doctrine. New York: John Wiley & Sons, 1961.

MLA-referens (9:e uppl.)

Gray, Alexander. The Development of Economic Doctrine. John Wiley & Sons, 1961.