| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Más Sopa de Letras: A Thousand Spanish Words in Word-Search Puzzles | 978-1-4961-8768-0 (1-4961-8768-7) | 2014 | |
| Parole Intrecciate: An Italian Vocabulary Review with Word-Search Puzzles | 978-1-4538-7353-3 (1-4538-7353-8) | 2010 | |
| Sopa de letras: A Spanish Vocabulary Review with Word-Search Puzzles | 978-1-4537-3671-5 (1-4537-3671-9) | 2010 | Philippe Delannoy Ph.D. |