1. Al Jazeera English. 2023. “Inside Singapore’s Deadly War on Drugs.” YouTube January 19. Accessed: November 26 2023. https://youtu.be/GL1JdIeoo4A.
2. “The Death Penalty in Singapore: In Decline but Still too Soon for Optimism;Chan W.;Asian Journal of Criminology,2016
3. “How Strong is Public Support for the Death Penalty in Singapore?;Chan W.;Asian Journal of Criminology,2018
4. Chee S. 2005. “The Case Against the Death Penalty.” Speech Open Singapore Centre Public Forum April 16. Accessed: December 12 2023. https://yoursdp.org/2005/05/06/the_case_against_the_death_penalty/.
5. “Discretionary Death Penalty for Convicted Drug Couriers in Singapore: Reflections on the High Court Jurisprudence thus Far;Chen S.;International Islamic University of Malaysia Law Journal,2015