| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Questing: A Guide to Creating Community Treasure Hunts | Paperback | 978-1-58465-532-9 (1-58465-532-1) | 2006 | Delia Clark |
| Questing: A Guide to Creating Community Treasure Hunts | Hardcover | 978-1-58465-334-9 (1-58465-334-5) | 2004 | " |
| The Heart of Learning | Paperback | 978-0-87477-955-4 (0-87477-955-3) | 1999 | |
Stefan Gläser · Stefan Glaser · Stefan Glocker · Stephan Glaser · Stéphane Glacier · Stephen Gallagher · Stephen Glazier