| well-formed | ||
| valid hyphenation | ||
| ISBN-10 | 3-551-56666-6 | 3551566666 |
| ISBN-13 | 978-3-551-56666-9 | 9783551566669 |
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-551-55566-4 | 3551555664 |
| ISBN-13 | 978-3-551-55566-3 | 9783551555663 |
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-551-35406-5 | 3551354065 |
| ISBN-13 | 978-3-551-35406-8 | 9783551354068 |
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-86717-659-0 | 3867176590 |
| ISBN-13 | 978-3-86717-659-0 | 9783867176590 |
| Agency | German language | |
| Publisher | Der Hoerverlag DHV | |