APA (7th ed.) Zitazioa

Arnold, R. A. (1996). Economics (3rd ed.). West.

Chicago Style (17th ed.) Zitazioa

Arnold, Roger A. Economics. 3rd ed. New York: West, 1996.

MLA (9th ed.) Zitazioa

Arnold, Roger A. Economics. 3rd ed. West, 1996.