1. Fred Bauer. The Power of a Note. In Heart at Work: Stories and Strategies for Building Self-Esteem and Reawakening the Soul at Work, compiled by Jack Canfield and Jacqueline Miller. (New York: McGraw-Hill, 1998), 190 “194.
2. Masaaki Imai, Kaizen: The Key to Japan s Competitive Success (New York: McGraw-Hill, 1986), 19 “20, 107.