Suradi, Siti Samahani, et al. “Modification of the Integrated Agro-Waste-Based Palm Oil With PET for Wastewater Treatment”. Multidisciplinary Applied Research and Innovation, vol. 5, no. 1, Jan. 2024, pp. 27-32, https://publisher.uthm.edu.my/periodicals/index.php/mari/article/view/13798.