Collaboration : how leaders avoid the traps, create unity, and reap big results / Morten T. Hansen. Hansen, Morten T. Industrial management. Leadership. HD31 .H317 2009 658.4092 HAC Includes bibliographical references (p. 211-219) and index. Boston : Harvard Business Press, c2009. c2009. 2009 Text xi, 231 p. : eng