M. KAMAL, Nurul Atiqah Aisyah; IBRAHIM, Siti Aida. Producing a Liquid Soap by Adding Lemon Extract from Used Cooking Oil for Multipurpose Cleaning Use. Research Progress in Mechanical and Manufacturing Engineering, [S. l.], v. 5, n. 1, p. 378–386, 2024. Disponível em: https://penerbit.uthm.edu.my/periodicals/index.php/rpmme/article/view/16803. Acesso em: 8 apr. 2026.