ROSMAN, Mohd Nur Izzuddin; IBRAHIM, Siti Aida; MUHAMMAD YUSUF ROSMAN. Optimisation of NaOH Concentration for Sustainable Soap Production Using Waste Cooking Oil. Journal of Advanced Mechanical Engineering Applications, [S. l.], v. 6, n. 2, p. 49–57, 2025. Disponível em: https://penerbit.uthm.edu.my/ojs/index.php/jamea/article/view/22435. Acesso em: 11 mar. 2026.