| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1995 | 978-1-900140-00-3 | Sally Colwell | Gateways to Travel: Primary Level Modules 1-10 |
| '' | 978-1-900140-10-2 | '' | Gateways to Air Travel: Primary Level Modules 1-10 |
| 1997 | 978-1-900140-71-3 | '' | Gateways to Travel: Advanced Level Modules 1-8 |