| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A New You: The Small Changes That Make the Biggest Difference to Your Life | 978-0-273-72269-4 (0-273-72269-7) | 2008 |
| The Secrets of Success in Selling: 12 Ways to Achieve Exceptional Results | 978-0-273-73009-5 (0-273-73009-6) | 2009 |