“ASSESSMENT OF WATER QUALITY AND HEAVY METAL CONTAMINATION (ALUMINUM, IRON, COPPER, CADMIUM, LEAD, AND ZINC) IN TERENGGANU, SETIU AND BESUT RIVERS, MALAYSIA”, J. Teknol., vol. 88, no. 4, pp. 761–772, Jun. 2026, doi: 10.11113/jurnalteknologi.v88.24719.