APA-referens (7:e uppl.)

Walker, F. A. (1893). First lessons in political economy. Henry Holt and Co..

Chicago-referens (17:e uppl.)

Walker, Francis Amasa. First Lessons in Political Economy. New York: Henry Holt and Co., 1893.

MLA-referens (8:e uppl.)

Walker, Francis Amasa. First Lessons in Political Economy. Henry Holt and Co., 1893.