| title | ISBN-13 | year of publica- tion | |
|---|---|---|---|
| Jenseits der Nacht | 978-3-404-11594-5 | 1990 | |
| Mädchenträume, Frauenleben | 978-3-404-11970-7 | 1993 | |
| Spanish Homework Booklet, Elementary, Level 1 | 978-0-88012-985-5 | 1999 | |
| Spanish Homework Booklet, Middle School / High School, Level 1 | 978-0-88012-987-9 | 1999 | |
| Spanish Homework Booklet, Middle School / High School, Level 2 | 978-0-88012-988-6 | 1999 | |
| Spanish Homework Booklet, Middle School / High School, Level 3 | 978-0-88012-989-3 | 1999 | |
| The 100+ Series Spanish, Elementary | 978-1-56822-197-7 | 1999 | |
| The 100+ Series Spanish, Middle School / High School | 978-1-56822-198-4 | 1999 | |
| Zeit der Liebe, Zeit des Kampfes. Roman. | 978-3-404-11881-6 | 1995 |