Koontz, H. (2015). Essentials of Management (10th.). McGraw Hill Education.
Lua i Stíl Chicago (17ú heag.)Koontz, Harold. Essentials of Management. 10th. McGraw Hill Education, 2015.
Lua MLA (9ú heag.)Koontz, Harold. Essentials of Management. 10th. McGraw Hill Education, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.