LATIF, AHMAD SAHLI; IBRAHIM, Siti Aida. The Effect of Water Ratio Variation in Soap From Cooking Oil. Research Progress in Mechanical and Manufacturing Engineering, [S. l.], v. 5, n. 1, p. 428–434, 2024. Disponível em: https://penerbit.uthm.edu.my/periodicals/index.php/rpmme/article/view/15791. Acesso em: 8 apr. 2026.