Cita APA (7th ed.)

Nickels, W. G. (1987). Understanding business (4th ed.). Times Mirror.

Cita Chicago (17th ed.)

Nickels, William G. Understanding Business. 4th ed. Toronto: Times Mirror, 1987.

Cita MLA (9th ed.)

Nickels, William G. Understanding Business. 4th ed. Times Mirror, 1987.