| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78110-600-2 | 1781106002 |
| ISBN-13 | 978-1-78110-600-6 | 9781781106006 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 1-78110-105-1 | 1781101051 |
| ISBN-13 | 978-1-78110-105-6 | 9781781101056 |
| Agency | English language | |
| Publisher | Pottermore Publishing | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 2-07-518764-9 | 2075187649 |
| ISBN-13 | 978-2-07-518764-0 | 9782075187640 |
| Agency | French language | |
| Publisher | Gallimard Jeunesse | |
| well-formed | |||||||||
| ignored hyphens | |||||||||
| ISBN-10 | 2-07-522576-1 | 2075225761 | |||||||
| ISBN-13 | 978-2-07-522576-2 | 9782075225762 | |||||||
| Agency | French language | ||||||||
| Publisher | Gallimard Jeunesse | ||||||||
| Hyphenation provided ("978-2075225762") is implausible so ignored it. | |||||||||