APA (7th ed.) Citation

Drucker, P. F. (2006). The Effective executive. HarperCollins Publishers, Inc..

Chicago Style (17th ed.) Citation

Drucker, Peter F. The Effective Executive. New York: HarperCollins Publishers, Inc., 2006.

MLA (9th ed.) Citation

Drucker, Peter F. The Effective Executive. HarperCollins Publishers, Inc., 2006.

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