| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1997 |
|
The Spell of the Sorcerer's Skull | Puffin / Penguin Books (US) | Novel | |
| August 2004 |
|
The Spell of the Sorcerer's Skull | Puffin / Penguin Books (US) | Novel |