Haribowo, R., T. Prayogo, N. Shaleha, and K. Hafni. “Performance of Multi-Soil-Layering (MSL) Urban Domestic Wastewater Treatment System”. Civil and Environmental Science Journal (CIVENSE), vol. 3, no. 1, Mar. 2020, pp. 37-50, doi:10.21776/ub.civense.2020.00301.5.