| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78939-146-6 | 1789391466 |
| ISBN-13 | 978-1-78939-146-6 | 9781789391466 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2012-2 | 9542720122 |
| ISBN-13 | 978-954-27-2012-6 | 9789542720126 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2030-0 | 9542720300 |
| ISBN-13 | 978-954-27-2030-0 | 9789542720300 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||