| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Creative Age: Awakening Human Potential in the Second Half of Life | 978-0-380-80071-1 (0-380-80071-3) | 2001 |
| The Creative Age: Awakening Human Potential In The Second Half Of Life | 978-0-380-97684-3 (0-380-97684-6) | 2000 |