“ASSESSMENT OF WATER QUALITY AND HEAVY METAL CONTAMINATION (ALUMINUM, IRON, COPPER, CADMIUM, LEAD, AND ZINC) IN TERENGGANU, SETIU AND BESUT RIVERS, MALAYSIA”. Jurnal Teknologi (Sciences & Engineering) 88, no. 4 (June 16, 2026): 761–772. Accessed October 3, 2026. https://journals.utm.my/jurnalteknologi/article/view/24719.