| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-89584-609-0 | 3895846090 |
| ISBN-13 | 978-3-89584-609-0 | 9783895846090 |
| Agency | German language | |
| Publisher | Der Hoerverlag DHV | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-89940-466-1 | 3899404661 |
| ISBN-13 | 978-3-89940-466-1 | 9783899404661 |
| Agency | German language | |
| Publisher | Der Hoerverlag DHV | |