KOONTZ HAROLD. (2013). ESSENTIALS OF MANAGEMENT (9TH ED.). TATA MC GRAW HILL.
Chicago-viite (17. p.)KOONTZ HAROLD. ESSENTIALS OF MANAGEMENT. 9TH ED. NEW DELHI: TATA MC GRAW HILL, 2013.
MLA-viite (9. p.)KOONTZ HAROLD. ESSENTIALS OF MANAGEMENT. 9TH ED. TATA MC GRAW HILL, 2013.
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