Koontz, H., O'Donnell, C., & Weihrich, H. (1986). Essentials of management (4. ed., 1. print.). McGraw-Hill.
Chicago Style (17th ed.) CitationKoontz, Harold, Cyril O'Donnell, and Heinz Weihrich. Essentials of Management. 4. ed., 1. print. New York [u.a.]: McGraw-Hill, 1986.
MLA (9th ed.) CitationKoontz, Harold, et al. Essentials of Management. 4. ed., 1. print. McGraw-Hill, 1986.
Warning: These citations may not always be 100% accurate.