Management Rev Ed: Drucker, Peter F.: 9780061252662: Amazon.com: Books
Amazon.com: The Essential Drucker: The Best of Sixty Years of Peter Drucker's Essential Writings on Management (Collins Business Essentials): 9780061345012: Drucker, Peter F.: Books
The Effective Executive: The Definitive Guide to Getting the Right Things Done (Harperbusiness Essentials): Drucker, Peter F.: 9780060833459: Amazon.com: Books
The Daily Drucker: 366 Days of Insight and Motivation for Getting the Right Things Done: Drucker, Peter F.: Amazon.com: Books