APA

Koontz H. W., .Essentials of Management An International Perspective. NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2007: .

Chicago

Koontz Harold/Heinz Weihrich, .Essentials of Management An International Perspective. NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2007: .

Harvard

Koontz H. W., .Essentials of Management An International Perspective. NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2007: .

MLA

Koontz Harold/Heinz Weihrich, .NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2007: . .