Loehr, Jim The power of full engagement : managing energy, not time, is the key to high performance and personal renewal / Jim Loehr and Tony Schwartz - New York : Free Press, 2003 - x. 245 p. : ill. ; 24 cm. Bibliography : p. 233-235 ISBN: 0743226747 RM104.52 Subjects--Topical Terms: Success--Psychological aspects