Chow, Jermyn (17 October 2009). "Brother succeeds RSAF chief". AsiaOne News. Archived from the original on 3 December 2013. Retrieved 15 November 2013.
Chow, Jermyn (17 October 2009). "Brother succeeds RSAF chief". AsiaOne News. Archived from the original on 3 December 2013. Retrieved 15 November 2013.