APA-referens (7:e uppl.)

Arnold, R. A. (2010). Economics (International ed.). Thomson South-Western.

Chicago-referens (17:e uppl.)

Arnold, Roger A. Economics. International ed. Mason, OH, USA: Thomson South-Western, 2010.

MLA-referens (8:e uppl.)

Arnold, Roger A. Economics. International ed. Thomson South-Western, 2010.