Astuti, Syurmi, and Elvi Sunarsih. “Literature Study: Use of Sungkai Leaf and Virgin Coconut Oil (VCO) in Soap Making”. Journal of Multidisciplinary Academic and Practice Studies 2, no. 4 (May 16, 2024): 279–292. Accessed October 22, 2025. https://goodwoodpub.com/index.php/JoMAPS/article/view/2150.