Nnadikwe Johnson, Iheme Chigozie, Mbadike Columbus Asodike, Chinemerem Joy Johnson and Ibe Raymond Obinna 2025. Exploring The Efficacy Of Black Soaps Derived From Palm Oil And Palm Kernel Oil With Caustic Potash (KOH) Extracted From Plantain Peel. Jurnal Teknik Indonesia. 4, 01 (Jun. 2025), 1–10.