Citazione Stile APA (7a Edizione)

Nikels,William G, McHugh, J. . M., & McHugh, S. . M. (2002). Understanding business (6th.ed.-.). McGraw - Hill.

Citazione stile Chigago Style (17a edizione)

Nikels,William G, James M. McHugh, e Susan M. McHugh. Understanding Business. 6th.ed.-. New York: McGraw - Hill, 2002.

Citatione MLA (9a ed.)

Nikels,William G, et al. Understanding Business. 6th.ed.-. McGraw - Hill, 2002.