| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Earl's Big Adventure in Costa Rica | Hardcover | 978-0-9800975-2-8 (0-9800975-2-5) | 2012 |
| Earl's Big Adventure in Costa Rica | Paperback | 978-0-9800975-0-4 (0-9800975-0-9) | 2007 |
| Earl's Big Adventure in Japan | Hardcover | 978-0-9800975-1-1 (0-9800975-1-7) | 2012 |