| GMD | Text |
| Classification | 823 WEL |
| Publisher | New York, Random House, 2005 |
| Subject | Time travel -- Juvenile fiction. |
| Series | Stepping stone book classic. |
| Description | 93 p. : ill. ; 20 cm. |
| ISBN | 9780679803713 |
| Additional ISBN | 9780679903710 / 9780439436540 |
| Suitable | From 9 To 12 |