Jane B. Burka and Lenora M. Yuen, Procrastination: Why You Do It, What to Do About It (Da Capo Press, 1983). – Прим. авт.
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Stephen R. Covey, The Seven Habits of Highly Effective People (Simon & Schuster, 1989); Stephen R. Covey, A. Roger Merrill, and Rebecca R. Merrill, First Things First (Simon & Schuster, 1994). – Прим. авт.
