Mohd Nur Izzuddin Rosman, Siti Aida Ibrahim, Ainuddin AR, Niki Prastomo. Synthesis and Characterization of Cinnamon Bar Soap from Waste and New Cooking Oils: A Comparative Study. IJIE [Internet]. 2025 Dec. 31 [cited 2026 Aug. 7];17(8):13-25. Available from: https://journal.uthm.edu.my/index.php/ijie/article/view/24078