Silsia, Devi, Laili Susanti, and Reko Apriantonedi. 2017. “EFFECTS OF KOH CONCENTRATION ON CHARACTERISTICS OF USED COOKING OIL LIQUID SOAP HAVING KALAMANSI CITTRUS FRAGRANCE”. Jurnal Agroindustri 7 (1):11-19. https://doi.org/10.31186/j.agroindustri.7.1.11-19.