Yelmiza Y, Joni R, Rokim M, Yuvendius H, Zondra E, Arlenny A. The Effect of Activated Carbon From Palm Oil Kernel Shells on Waste Cooking Oil for Soap Production. MOTIVECTION [Internet]. 18Feb.2026 [cited 29Apr.2026];8(1):1-2. Available from: https://www.motivection.imeirs.org/index.php/motivection/article/view/527