APA-referens (7:e uppl.)

Feier, R. (1930). Elements of economics. College entrance book co..

Chicago-referens (17:e uppl.)

Feier, Richard. Elements of Economics. New York: College entrance book co., 1930.

MLA-referens (8:e uppl.)

Feier, Richard. Elements of Economics. College entrance book co., 1930.