| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-551-55745-4 | 3551557454 | 
| ISBN-13 | 978-3-551-55745-2 | 9783551557452 | 
| Agency | German language | |
| Publisher | Carlsen | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 3-551-55740-3 | 3551557403 | 
| ISBN-13 | 978-3-551-55740-7 | 9783551557407 | 
| Agency | German language | |
| Publisher | Carlsen | |