| Beyond the curve | Kodansha International | Tiada | 1991 | 4770014651 |
| Jumping the curve | | Tiada | 1994 | 1555427057 |
| New SundayTimes (Leraning Curve) | | 27 June 2004 | | |
| New SundayTimes (Learning Curve) | | 20 February 2005 | | |
| New Sunday Times (Learning Curve) | | 22 May 2005 | | |
| New Sunday Times (Learning Curve) | | 1 May 2005 | | |
| New Sunday Times (Learning Curve) | | 6 March 2005 | | |
| New Sunday Times (Learning Curve) | | 15 January 2006 | | |
| New Sunday Times (Learning Curve) | | 30 January 2005 | | |
| New Straits Times (Learning Curve) | | 1 August 2004 | | |