Drucker, P. F. (2002). The effective executive. HarperBusiness Essentials.
Chicago Style (17th ed.) CitationDrucker, Peter F. The Effective Executive. New York: HarperBusiness Essentials, 2002.
MLA (9th ed.) CitationDrucker, Peter F. The Effective Executive. HarperBusiness Essentials, 2002.
Warning: These citations may not always be 100% accurate.