- Money Talks: The Complete Guide to Creating a Profitable Workshop or Seminar in Any Field
- Consultant's Kit: Establishing and Operating Your Successful Consulting Business
- Our Harvard: Reflections on College Life
- Development Today: A Fund Raising Guide for Nonprofit Organizations
- The Consultant's Kit: Establishing and Operating Your Successful Consulting Business
- Frank Bettger
- Ian McMahan
- Robert E. Coleman
- Gerry Spence
- Geoffrey A. Moore
- Warren Bennis
- Eric Hoffer
- Robert Fritz
- Randall Arthur
- Tim Hansel
- Ellen J. Langer
- Will Metzger
- George W. Dudley
- David J. Hesselgrave
- Keith D. Harrell
- John Lofland
- Robert C. Alberts
- Hollis L Green
- Arthur R. Ciancutti
- Bud Gardner