| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Heinemann Maths for Stpm Paper 1 | 978-0-435-92298-6 (0-435-92298-X) | 2003 |
| Heinemann Maths for Stpm Paper 2 | 978-0-435-92299-3 (0-435-92299-8) | 2003 |
| On the Record: The Journalistic Legacy of President Wee Kim Wee | 978-981-05-6707-1 (981-05-6707-3) | 2006 |