Haitham Abdalrazak, P. M. Ridzuan, Shariff Halim, Lim Thien Poh, M. R. Alliya- Syakirah, Vijayendran Thineswary, B. N. Maizatul-Afiqah, I. N. Syamimi, “Review on Substances Abuse in Malaysia - Way Forward and Challenging”, Annals of RSCB, pp. 4930–4943, Feb. 2021.