APA-referens (7:e uppl.)

Nickels, W., McHugh, J., & McHugh, S. M. (2002). Understanding business (6th ed.). McGraw-hill..

Chicago-referens (17:e uppl.)

Nickels, William, James McHugh, och Susan M. McHugh. Understanding Business. 6th ed. Boston: McGraw-hill., 2002.

MLA-referens (9:e uppl.)

Nickels, William, et al. Understanding Business. 6th ed. McGraw-hill., 2002.