Sinek, Simon, Find your why : a practical guide to discovering purpose for you or your team / Simon Sinek with David Mead and Peter Docker. - xii, 242 pages : illustrations; 24 cm ISBN: 9780143111726 LCCN: 2017019047 Subjects--Topical Terms: Attitude (Psychology)Conduct of life.Optimism LC Class. No.: BF327 / .S56 2017 Dewey Class. No.: 152.4