| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Structured Programming with COMAL | 978-0-13-853748-7 (0-13-853748-8) | 1982 |
| Structured programming with COMAL | 978-0-470-27318-0 (0-470-27318-6) | 1982 |
| Structured Programming With Comal | 978-0-470-27359-3 (0-470-27359-3) | 1982 |