Cita APA (7a ed.)
Nickels, W. G., & McHugh, J. M. (1987). Understanding business (4th ed.). IRWIN.
Cita Chicago Style (17a ed.)
Nickels, William G., y James M. McHugh. Understanding Business. 4th ed. Chicago: IRWIN, 1987.
Cita MLA (9a ed.)
Nickels, William G., y James M. McHugh. Understanding Business. 4th ed. IRWIN, 1987.
Precaución: Estas citas no son 100% exactas.