Drucker, P. F. (2006). The effective executive. HarperCollins Publishers.
Chicago Style (17th ed.) CitationDrucker, Peter F. The Effective Executive. New York: HarperCollins Publishers, 2006.
MLA (8th ed.) CitationDrucker, Peter F. The Effective Executive. HarperCollins Publishers, 2006.
Warning: These citations may not always be 100% accurate.