Blanchard, K. H., Zigarmi, P., & Zigarmi, D. (1985). Leadership and the one minute manager: Increasing effectiveness through situational leadership. Morrow, HarperCollins Publishers.

Blanchard, Kenneth H., Patricia Zigarmi, and Drea Zigarmi. Leadership and the One Minute Manager: Increasing Effectiveness Through Situational Leadership. New York : New Delhi: Morrow, HarperCollins Publishers, 1985.

Blanchard, Kenneth H., et al. Leadership and the One Minute Manager: Increasing Effectiveness Through Situational Leadership. Morrow, HarperCollins Publishers, 1985.