| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Radical Inquiry Journal: A Companion Tool for Simple Rules, A Radical Inquiry into Self | 978-0-9821112-3-9 (0-9821112-3-1) | 2011 | Royce Holladay |
| Simple Rules: A Radical Inquiry into Self | 978-0-9821112-2-2 (0-9821112-2-3) | 2011 | " |