Drucker, P. F. (2008). The essential drucker : the best of sixty years of Peter Drucker's essential writings on management / Peter F. Drucker: The best of sixty years of Peter Drucker's essential writings on management. Collins.
Chicago Edition CitationDrucker, Peter F. The Essential Drucker : The Best of Sixty Years of Peter Drucker's Essential Writings on Management / Peter F. Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings on Management. New York, N.Y.: Collins, 2008.
MLA Edition CitationDrucker, Peter F. The Essential Drucker : The Best of Sixty Years of Peter Drucker's Essential Writings on Management / Peter F. Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings on Management. Collins, 2008.