Lingamen, Renz Brixter B., and Orlean G. Dela Cruz. “Polyethylene Terephthalate (PET) Waste As Partial Aggregate and Reinforcement in Reinforced Concrete: A Review”. International Journal of Integrated Engineering 15, no. 2 (July 31, 2023): 159–171. Accessed July 23, 2024. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/13871.