| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 87-02-02772-0 | 8702027720 |
| ISBN-13 | 978-87-02-02772-3 | 9788702027723 |
| Agency | Denmark | |
| Publisher | Gyldendalske Boghandel | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78110-317-8 | 1781103178 |
| ISBN-13 | 978-1-78110-317-3 | 9781781103173 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 87-02-28479-0 | 8702284790 |
| ISBN-13 | 978-87-02-28479-9 | 9788702284799 |
| Agency | Denmark | |
| Publisher | Gyldendalske Boghandel | |