G. Nickels, W., M. McHugh, J., & M. McHugh, S. (1993). Understanding Business, 3rd ed. McGraw-Hill.
Chicago Style (17th ed.) ZitazioaG. Nickels, William, James M. McHugh, eta Susan M. McHugh. Understanding Business, 3rd Ed. New York: McGraw-Hill, 1993.
MLA (9th ed.) ZitazioaG. Nickels, William, et al. Understanding Business, 3rd Ed. McGraw-Hill, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.