Hafizad , Safuan, and Badrul Haswan Besar. “Assessment of Heavy Metals Concentrations in Grouper Fish from Kertih Terminal and Tanjung Sulong Port”. International Journal of Synergy in Engineering and Technology 1, no. 1 (July 1, 2020). Accessed October 29, 2025. https://www.ijset.tatiuc.edu.my/index.php/ijset/article/view/14.