Articles (2)
| Title | Pages | Publication | Code | Date | Publisher | System (Setting) | |
|---|---|---|---|---|---|---|---|
 Game System and Skills | 16-27 |  Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic) | |
| Game System and Skills | 28-45 |  Call of Cthulhu | CHA2336 | 1992 | Chaosium | Call of Cthulhu (Classic) |