MHD ZOL, MOHD ZAROUL AFIQ; MOHD RUS, ANIKA ZAFIAH. The Physical Characteristics of Handmade Soap Made Up Using Used Cooking Oil. Research Progress in Mechanical and Manufacturing Engineering, [S. l.], v. 4, n. 1, p. 540–547, 2023. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/3780. Acesso em: 12 mar. 2026.