APA-referens (7:e uppl.)

Chapman, S. J. (1923). Elementary economics (Fifth impression.). Longmans, Green and Co..

Chicago-referens (17:e uppl.)

Chapman, Sidney John. Elementary Economics. Fifth impression. London : New York, [etc.]: Longmans, Green and Co., 1923.

MLA-referens (8:e uppl.)

Chapman, Sidney John. Elementary Economics. Fifth impression. Longmans, Green and Co., 1923.