Nickels, W. G., McHugh, J. M., & McHugh, S. M. Understanding business (Eighth edition.).
Chicago Style aipamenaNickels, William G., James M. McHugh, and Susan M. McHugh. Understanding Business. Eighth edition.
MLA aipamenaNickels, William G., et al. Understanding Business. Eighth edition.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.