Hale, G. A. (1996). The leader's edge: Mastering the five skills of breakthrough thinking. Burr Ridge, Ill: Irwin Professional Pub.
Chicago ZitierstilHale, Guy A. The Leader's Edge: Mastering the Five Skills of Breakthrough Thinking. Burr Ridge, Ill: Irwin Professional Pub, 1996.
MLA ZitierstilHale, Guy A. The Leader's Edge: Mastering the Five Skills of Breakthrough Thinking. Burr Ridge, Ill: Irwin Professional Pub, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.