APA Citation

Harold Koontz, & Heinz weihrich. (1990). Essentials of management (1/1990.). Singapore: Mc graw hill.

Chicago Style Citation

Harold Koontz, and Heinz weihrich. Essentials of Management. 1/1990. Singapore: Mc graw hill, 1990.

MLA Citation

Harold Koontz, and Heinz weihrich. Essentials of Management. 1/1990. Singapore: Mc graw hill, 1990.

Warning: These citations may not always be 100% accurate.