Tracy, Brian, 12 disciplines of leadership excellence : how leaders achieve sustainable high performance / Twelve discipline of leadership excellence. Brian Tracy, Peter Chee. - New York : McGraw-Hill Education, c2013. - xii, 204 pages ; 24 cm. Includes index. ISBN: 9780071809467 (Hb.) Subjects--Topical Terms: Leadership. Dewey Class. No.: T72 2013