Citazione Stile APA (7a Edizione)

Nickels, W. G., & McHugh, J. M. (1996). Understanding business (4th ed.). IRWIN.

Citazione stile Chigago Style (17a edizione)

Nickels, William G., e James M. McHugh. Understanding Business. 4th ed. Chicago: IRWIN, 1996.

Citatione MLA (9a ed.)

Nickels, William G., e James M. McHugh. Understanding Business. 4th ed. IRWIN, 1996.