R.D. · Robert D. · Robert Doyel & Stephen Chenault · Robert Doyel and Stephen Chenault
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Engineering Dungeons | 978-1-929474-99-8 (1-929474-99-7) | 2008 | |
| Monsters & Treasure | 978-1-929474-95-0 (1-929474-95-4) | 2008 | Stephen Chenault |