P. Pauhesti, P. Sunny Yulia, H. Widiyatni, Y. Sutadiwiria, G. Jane, and W. Yanti, “Soap Bar Making from Waste Cooking Oil for Residents of 07 Area, Duri Pulo Sub-district, Jakarta”, IJCS, vol. 4, no. 2, pp. 145–148, May 2024.