Watkins, Alan, 1961- 4D leadership : competitive advantage through vertical leadership development / Four D leadership. Dr Alan Watkins. - vi, 239 pages : illustrations ; 24 cm Includes bibliographical references (pages 227-232) and index. ISBN: 9780749474645 LCCN: 2015036070 Subjects--Topical Terms: Leadership.Executive ability.Strategic planning. LC Class. No.: HD57.7 W3787 / L2016 Dewey Class. No.: 658.4/092