Wen Kam Leong, Alex Lung Keat Ngo, Alvin Choon Hsien Wong, Jen Hua Ling, How Teck Sia. The Mandatory 4 Years Desludging Frequency of Underground Septic Tanks in Residential Areas: A Case Study in Sibu Sarawak, East Malaysia. J. civil eng. forum [Internet]. 2022May25 [cited 2024Nov.24];8(2):147-56. Available from: https://jurnal.ugm.ac.id/v3/JCEF/article/view/3812