Covey, Stephen R. Principle-centered leadership / Stephen R. Covey. - 1st Fireside ed. - New York : Simon & Schuster, 1992. - 334 p. : ill. ; 22 cm. Includes index. ISBN: 0671792806 (pbk.) Subjects--Topical Terms: Success--Psychological aspects.Leadership. Dewey Class. No.: 158.4 / COV 1992