Weihrich, H. (2012). Essentials of Management Koontz, Harold (3rd ed.). PHI Learning.
Chicago-čujuhus (17. p.)Weihrich, Heinz. Essentials of Management Koontz, Harold. 3rd ed. New Delhi: PHI Learning, 2012.
MLA-čujuhus (9. p.)Weihrich, Heinz. Essentials of Management Koontz, Harold. 3rd ed. PHI Learning, 2012.
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