| not well-formed | |||||||||
| invalid hyphenation | |||||||||
| The check-digit is not correct. If the rest of the ISBN is correct (and it may not be), the check digit should be: 3. | |||||||||
| Hyphenation provided appears to be incorrect. It should be: 978-0-7786-7530-9 | |||||||||
| Correcting check-digit gives: 978-0-7786-7530-3 which appears to be valid. The governing agency is: English language. | |||||||||
