Covey, Stephen R. The 7 habits of highly effective people : powerful lessons in personal change / by Stephen R. Covey. - 1st ed. - New york : Simon & Schuster. - xvi,440p. : illus. ; 20cm. ISBN: 9781471195709 Subjects--Topical Terms: Processing. LC Class. No.: 637.8 Dewey Class. No.: