Cita APA (7th ed.)

Nickels, W. G. (2008). Understanding Business. (8th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Nickels, William G. Understanding Business. 8th ed. New York: McGraw-Hill, 2008.

Cita MLA (9th ed.)

Nickels, William G. Understanding Business. 8th ed. McGraw-Hill, 2008.