| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| 21 Ways to Defuse Anger and Calm People Down | 978-1-55977-703-2 (1-55977-703-6) | 1997 |
| Do You Know How to Shut Up?: And 51 Other Life Lessons that Will Make You Uncomfortable | 978-0-9801857-0-6 (0-9801857-0-X) | 2008 |
| Do You Know How To Shut Up? and 51 other life lessons that will make you uncomfortable | 978-0-9801857-1-3 (0-9801857-1-8) | 2008 |