Tang, Evon E.W., and Darrien Y.S. Mah. “Rainwater Harvesting System in a Congested Residential Estate”. Journal of Applied Science & Process Engineering 2, no. 2 (September 30, 2015): 64-73. Accessed April 24, 2024. https://publisher.unimas.my/ojs/index.php/JASPE/article/view/165.