| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | 
|---|---|---|---|
| Effective Leadership In Adventure Programming | 978-O-736O-525O-4 (O-736O-525O-X) | 2005 | Michael A, Ph.D. Gass · Priest · Simon Priest | 
D. P. · P.P. · Ph.D. · S D · S.D. Priest · S P · Simon Priest