Rahayu, A.; Mulyadi, I.; Fajri, J.; Jamilatun, S. J.; Nuraini, N.; Wulandari, N.; Marlena, Y.; Ningsih, D.; Lim, L. The Multi Soil Layering Method for Wastewater Treatment: Review. Indo. J. Chem. Res. 2022, 10, 125-135.