S. Sudarmin, C. Kurniawan, P. N, M. ., A. ., and N. I, “The Implementation of Chemical Project Learning Model Integrated with Ethno-Stem Approach on Water Treatment Topic Using Kelor (Moringa oleifera) Seed Extract As Bio-Coagulant ”, KSS, vol. 3, no. 18, pp. 492–501, Jul. 2019.