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