D D ยท Darryl Enos
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Maximizing Performance: Organizations, Teams, and Individuals | 978-1-4665-8563-8 (1-4665-8563-3) | |
| Performance Improvement: Making It Happen | 978-1-57444-282-3 (1-57444-282-1) | 2000 |
| Performance Improvement: Making it Happen, Second Edition | 978-1-4200-4584-0 (1-4200-4584-9) | 2007 |