| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| The Grace of Great Things: Creativity and Innovation | 978-0-395-58868-0 (0-395-58868-5) | 1991 |
| Time and the Art of Living | 978-0-395-89831-4 (0-395-89831-5) | 1997 |
G.P. · R. P. · Robert English · Robert Grudin · Robert P.