| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Let It Fly! Defy the Laws of Business Gravity and Keep Your Company Soaring | 978-0-615-20865-7 (0-615-20865-7) | 2008 |
| The Road to Gumption: Using Your Inner Courage to Balance Your Work and Personal Life | 978-0-615-14687-4 (0-615-14687-2) | 2007 |