Koontz, H. (2007). Essentials of Management. Elsevier.
Chicago Style aipamenaKoontz, Harold. Essentials of Management. Burlington: Elsevier, 2007.
MLA aipamenaKoontz, Harold. Essentials of Management. Elsevier, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.