| title | ISBN-13 | year of publication |
|---|---|---|
| Effective Grammar Tests | 978-962-219-239-3 | 2008 |
| Effective Grammar Tests for Form 2 | 978-962-219-238-6 | 2005 |
| English Examiner for Junior Forms Book 3A | 978-962-219-213-3 | 2004 |
| English Examiner for Junior Forms Book 3B | 978-962-219-216-4 | 2006 |