Drucker, P. F. (2005). The essential drucker: The best of sixty years of Peter Drucker's essential writings on management. NY: Collins Business.
Chicago Style CitationDrucker, Peter F. The Essential Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings On Management. NY: Collins Business, 2005.
MLA CitationDrucker, Peter F. The Essential Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings On Management. NY: Collins Business, 2005.
Warning: These citations may not always be 100% accurate.