- Author: Leong Kaiwen
- Language: English
- Year: 2013
- Author: Leong Elaine, Leong Kaiwen
- Language: English
- Year: 2016
- Author: Choi Edward H., Leong Kaiwen, Lim Edwin
- Language: English
- Year: 2014
- Author: Lim Edwin, Leong Kaiwen, Choi Edward H
- Language: English
- Year: 2014
- Author: Lim Edwin, Leong Kaiwen, Choi Edward H
- Language: English
- Year: 2014