| title | ISBN-13 | year of publication |
|---|---|---|
| Conversational French in 20 Lessons | 978-0-8050-1497-6 | 1990 |
| Conversational Japanese in 20 Lessons | 978-0-06-463606-3 | |
| Conversational Spanish in 20 Lessons | 978-0-8050-1496-9 | 1990 |
| Verbos Españoles: Diccionario de la Conjugación Castellana | 978-0-243-50477-0 | 2018 |
D D · D. D. L. · De L. · R.D. · R. L · Rafael Diez De La Cortina
Forgotten Books · HarperCollins · Henry Holt and Company