APA (7th ed.) Citation

Drucker, P. F. (2005). The essential drucker: The best of sixty years of Peter Drucker's essential writings on management. Collins Business.

Chicago Style (17th ed.) Citation

Drucker, Peter F. The Essential Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings on Management. New York: Collins Business, 2005.

MLA (9th ed.) Citation

Drucker, Peter F. The Essential Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings on Management. Collins Business, 2005.