APA-referens (7:e uppl.)

Arnold, R. A. (2007). Economics (Concise ed.). Thomson Business and Economics.

Chicago-referens (17:e uppl.)

Arnold, Roger A. Economics. Concise ed. Mason, OH: Thomson Business and Economics, 2007.

MLA-referens (8:e uppl.)

Arnold, Roger A. Economics. Concise ed. Thomson Business and Economics, 2007.