Edy Santosa, F. R., A. D. Atmoko, and S. W. Mudjanarko. “Index Risk of Sanitation (IRS) Modelling to Determine Domestic Waste Water System”. International Journal of Sustainable Construction Engineering and Technology, Vol. 11, no. 1, May 2020, pp. 87-96, https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/6231.