William E. · William Easton · William Exton Jr.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Motivational leverage; a new approach to managing people | 978-0-13-604082-8 (0-13-604082-9) | 1974 |
| Selling leverage: How to motivate people to buy | 978-0-13-805433-5 (0-13-805433-9) | 1984 |