Venny, R.F., I.K. Nizar, and A.M.M.A. Bakri. “Properties of Modified Polystyrene Lightweight Aggregate in Concrete”. Journal of Engineering and Technology (JET) 1 (June 30, 2010): 119–128. Accessed May 13, 2024. https://jet.utem.edu.my/jet/article/view/139.