- Peaks and valleys, making good and bad times work for you--at work and in life, Spencer Johnson
- Out of the maze, an a-mazing way to get unstuck, Spencer Johnson, M.D
- Who moved my cheese?, an a-mazing way to deal with change in your work and in your life, Spencer Johnson
- Out of the maze, an A-Mazing way to get unstuck, Spencer Johnson, M.D. ; afterword by Ken Blanchard