| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1989 | 978-0-9623804-0-2 | Steve Shapiro | The Art of Professional Serving: How to Increase Your Income by Raising Check Averages and Improving Customer Service |
| 978-0-9623804-1-9 | Bill Bachrach | It's All About Them: How Trusted Advisors Listen for Success | |
| 1999 | 978-0-9623804-2-6 | Steve Shapiro | Listening For Success--How to Master the Most Important Skill of Network Marketing |