Koontz, H., O'Donnel, C., & Weihrich, H. (1972). Management. McGraw Hill.
Chicago Style aipamenaKoontz, Harold, Cyril O'Donnel, and Heinz Weihrich. Management. New Delhi: McGraw Hill, 1972.
MLA aipamenaKoontz, Harold, et al. Management. McGraw Hill, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.