| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2622-8 | 9542726228 |
| ISBN-13 | 978-954-27-2622-7 | 9789542726227 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2625-2 | 9542726252 |
| ISBN-13 | 978-954-27-2625-8 | 9789542726258 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2623-6 | 9542726236 |
| ISBN-13 | 978-954-27-2623-4 | 9789542726234 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2626-0 | 9542726260 |
| ISBN-13 | 978-954-27-2626-5 | 9789542726265 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 954-27-2628-7 | 9542726287 |
| ISBN-13 | 978-954-27-2628-9 | 9789542726289 |
| 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 | 954-27-2627-9 | 9542726279 |
| ISBN-13 | 978-954-27-2627-2 | 9789542726272 |
| Agency | Bulgaria | |
| Publishers | Egmont | |
| Egmont Bulgaria | ||