| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-551-55169-3 | 3551551693 |
| ISBN-13 | 978-3-551-55169-6 | 9783551551696 |
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| valid hyphenation | ||
| ISBN-10 | 3-551-55300-9 | 3551553009 |
| ISBN-13 | 978-3-551-55300-3 | 9783551553003 |
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-551-35403-0 | 3551354030 |
| ISBN-13 | 978-3-551-35403-7 | 9783551354037 |
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-86717-353-2 | 3867173532 |
| ISBN-13 | 978-3-86717-353-7 | 9783867173537 |
| Agency | German language | |
| Publisher | Der Hoerverlag DHV | |