Zayadi, Nabilah, and Norzila Othman. “Removal of Zinc and Ferum Using Tilapia Fish Scale”. International Journal of Integrated Engineering 5, no. 1 (November 20, 2013). Accessed July 3, 2024. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/775.