K.k. · Kerstin Kromminga · Kirsten Kröning
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Between Friends | 978-0-425-23347-4 (0-425-23347-2) | 2010 |
| Catching Genius | 978-0-425-21435-0 (0-425-21435-4) | 2007 |
| Matters of Faith | 978-0-425-22179-2 (0-425-22179-2) | 2008 |