C C · C. Charles · C L · L. C.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Instant Trainer | 978-0-07-011958-1 | 1997 | |
| Stick to It!: The Power of Positive Persistence | 978-0-9644621-0-6 | 1995 | |
| The Customer Service Companion | 978-0-9644621-1-3 | 1996 | |
| The Customer Service Companion Study Guide | 978-0-9644621-2-0 | ||
| The Instant Trainer: Quick Tips on How to Teach Others What You Know | 978-0-07-011965-9 | 1997 | Chris Clarke-Epstein |