Wahid Ali Hamood Altowayt. “Pollution of Water from Urban, Agricultural and Industrial Effluent: A Review”. Progress in Engineering Application and Technology 3, no. 2 (December 19, 2022): 967–977. Accessed May 2, 2024. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/9805.