APA (7th ed.) Citation

Drucker, P. F. (2002). IThe effective executive. HarperBusiness.

Chicago Style (17th ed.) Citation

Drucker, Peter F. IThe Effective Executive. New York: HarperBusiness, 2002.

MLA (9th ed.) Citation

Drucker, Peter F. IThe Effective Executive. HarperBusiness, 2002.

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