| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-446-930-3 | 9544469303 |
| ISBN-13 | 978-954-446-930-6 | 9789544469306 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2310-5 | 9542723105 |
| ISBN-13 | 978-954-27-2310-3 | 9789542723103 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78939-219-5 | 1789392195 |
| ISBN-13 | 978-1-78939-219-7 | 9781789392197 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-446-930-3 | 9544469303 |
| ISBN-13 | 978-954-446-930-6 | 9789544469306 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2624-4 | 9542726244 |
| ISBN-13 | 978-954-27-2624-1 | 9789542726241 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78110-538-3 | 1781105383 |
| ISBN-13 | 978-1-78110-538-2 | 9781781105382 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |