| well-formed | ||
| valid hyphenation | ||
| ISBN-10 | 618-01-0574-X | 618010574X |
| ISBN-13 | 978-618-01-0574-2 | 9786180105742 |
| Agency | Greece | |
| Publisher | Psychogios Publications | |
| well-formed | ||
| valid hyphenation | ||
| ISBN-10 | 618-01-0397-6 | 6180103976 |
| ISBN-13 | 978-618-01-0397-7 | 9786180103977 |
| Agency | Greece | |
| Publisher | Psychogios Publications | |
| well-formed | ||
| valid hyphenation | ||
| ISBN-10 | 618-01-2180-X | 618012180X |
| ISBN-13 | 978-618-01-2180-3 | 9786180121803 |
| Agency | Greece | |
| Publisher | Psychogios Publications | |