| well-formed | ||
| valid hyphenation | ||
| ISBN-10 | 9939-68-464-9 | 9939684649 |
| ISBN-13 | 978-9939-68-464-2 | 9789939684642 |
| Agency | Armenia | |
| Publisher | Zangak | |
| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 9939-99-015-4 | 9939990154 |
| ISBN-13 | 978-9939-99-015-6 | 9789939990156 |
| Agency | Armenia | |
| Publisher | Zangak | |