Heifetz, R. A. (2009).  The practice of adaptive leadership: Tools and tactics for changing your organization and the world.  Harvard Business Press.

 Heifetz, Ronald A.  The Practice of Adaptive Leadership: Tools and Tactics for Changing Your Organization and the World.  Harvard Business Press, 2009.

 Heifetz, Ronald A.  The Practice of Adaptive Leadership: Tools and Tactics for Changing Your Organization and the World.  Harvard Business Press, 2009.