| ▲Título▼ | △C▼ | ▲Año▼ | ▲V▼ | ▲Concepto▼ |
|---|---|---|---|---|
| New Psychic Feats for Call of Cthulhu d20 |   | 2003 | — | Escritor |
| Introduction (to "The Parapsychologist's Handbook") |   | 2003 | — | Escritor |
| Parapsychological Literature, 1882-1930 | | 2003 | — | Escritor |
| Parapsychology: Exploring new frontiers of science (junto a Simon Monk) | | 2003 | — | Escritor |
| Phenomena (junto a Jessica Billman y Simon Monk) | | 2003 | — | Escritor |
| Secrets Mankind Was Not Meant To Know (junto a Simon Monk) | | 2003 | — | Escritor |
| Sinister Seeds |  | 2003 | — | Escritor |
| Zener Cards |  | 2003 | — | Escritor |
