CreateSpace Independent Publishing Platform · HarperCollins
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Gratitude Soup | 978-1-4486-8128-0 (1-4486-8128-6) | 2009 | |
| Gratitude Soup: Create Your Own | 978-1-4528-5859-3 (1-4528-5859-4) | 2010 | |
| Happy Yoga: 7 Reasons Why There's Nothing to Worry About | 978-0-06-053339-7 (0-06-053339-0) | 2003 | Steve Ross |