APA (7th ed.) Zitazioa

Nickels, W. G., & McHugh, J. M. (1987). Understanding business (4th ed.). IRWIN.

Chicago Style (17th ed.) Zitazioa

Nickels, William G., eta James M. McHugh. Understanding Business. 4th ed. Chicago: IRWIN, 1987.

MLA (9th ed.) Zitazioa

Nickels, William G., eta James M. McHugh. Understanding Business. 4th ed. IRWIN, 1987.