| title | ISBN-13 | year of publication |
|---|---|---|
| Longman International English Course: Unit Test 1 | 978-7-81095-974-2 | 1991 |
| Longman International English Course: Unit Test 3 | 978-7-81095-973-5 | 1991 |
| Longman International English Course: Unit Test 4 | 978-7-81095-955-1 | 1991 |
| Longman International English Course Unit Testing | 978-7-81095-954-4 | 1991 |