APA-referens (7:e uppl.)

Parkin, M. (2000). Economics (5th ed.). Addison-Wesley Pub. Co..

Chicago-referens (17:e uppl.)

Parkin, Michael. Economics. 5th ed. Reading, Mass.: Addison-Wesley Pub. Co., 2000.

MLA-referens (8:e uppl.)

Parkin, Michael. Economics. 5th ed. Addison-Wesley Pub. Co., 2000.