| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Instant Recall French Vocabulary: Learn and Remember French Faster than You Ever Imagined Possible! | 978-0-658-01126-9 (0-658-01126-X) | 2001 |
| Instant Recall Spanish Vocabulary: Learn and Remember Spanish Faster than You Ever Imagined Possible! | 978-0-658-01143-6 (0-658-01143-X) | 2001 |
| Linkword Welsh | 978-1-85902-268-9 (1-85902-268-5) | 2000 |