Kuok Kuok, King, and Po Chan Chiu. “Space-Saving Rainwater Harvesting Tanks for Double Story Houses in Kuching, Sarawak”. International Journal of Engineering & Technology 8, no. 1 (January 27, 2019): 38–43. Accessed November 24, 2024. https://sciencepubco.com/index.php/ijet/article/view/17437.