| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 80-00-01392-4 | 8000013924 |
| ISBN-13 | 978-80-00-01392-3 | 9788000013923 |
| Agency | former Czechoslovakia | |
| Publisher | albatros | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78110-752-1 | 1781107521 |
| ISBN-13 | 978-1-78110-752-2 | 9781781107522 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 80-00-00951-X | 800000951X |
| ISBN-13 | 978-80-00-00951-3 | 9788000009513 |
| Agency | former Czechoslovakia | |
| Publisher | albatros | |