| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Raising an Adult: The 4 Critical Habits to Prepare Your Child for Life! | 978-0-9708766-4-5 (0-9708766-4-5) | 2007 |
| Tipping for Success: Secrets for How to Get In and Get Great Service | 978-0-9708766-3-8 (0-9708766-3-7) | 2001 |