Murwaningsih, Tri. “PROCESSING USED COOKING OIL INTO SOAP AS AN EFFORT TO ESTABLISH HOME INDUSTRY”. SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) 2, no. 2 (December 30, 2021): 147–158. Accessed April 29, 2024. http://journal2.uad.ac.id/index.php/spekta/article/view/3885.