APA-referens (7:e uppl.)

Gide, C., & Veditz, C. W. A. (1904). Principles of political economy (2nd American ed.). D.C. Heath & Co..

Chicago-referens (17:e uppl.)

Gide, Charles, och Charles William August Veditz. Principles of Political Economy. 2nd American ed. Boston: D.C. Heath & Co., 1904.

MLA-referens (8:e uppl.)

Gide, Charles, och Charles William August Veditz. Principles of Political Economy. 2nd American ed. D.C. Heath & Co., 1904.