| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Azrael Loves Chocolate, Michael's A Jock: An Insider's Guide to What Your Angels Are Really Like | 978-0-7387-1441-7 (0-7387-1441-0) | 2008 |
| The Angel Code: Your Interactive Guide to Angelic Communication | 978-0-7387-2123-1 (0-7387-2123-9) | 2010 |