Peter F. Drucker, The Effective Executive: The Definitive Guide to Getting the Right Things Done, HarperCollins Publishers, January 3, 2006.
齊若蘭譯，杜拉克談高效能的5個習慣，遠流，2009
The measure of the executive, Peter F. Drucker reminds us, is the ability to "get the right things done." This usually involves doing what other people have overlooked as well as avoiding what is unproductive. Intelligence, imagination, and knowledge may all be wasted in an executive job without the acquired habits of mind that mold them into results.