APA (7th ed.) Zitazioa
Nickels, W. G., McHugh, J. M., & McHugh, S. M. (1990). Understanding business (2nd ed.). Irwin.
Chicago Style (17th ed.) Zitazioa
Nickels, William G., James M. McHugh, eta Susan M. McHugh. Understanding Business. 2nd ed. Homewood, IL: Irwin, 1990.
MLA (9th ed.) Zitazioa
Nickels, William G., et al. Understanding Business. 2nd ed. Irwin, 1990.
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