Maidin, N.A., M.H.A. Rahman, M.N. Ahmad, S.A.A. Rahman, M.H. Osman, M.K. Wahid, and M.R. Alkahari. “Initial Design of Semi Auto Soap Making Device from Used Cooking Oil for Home Appliances”. Journal of Advanced Manufacturing Technology (JAMT) 12, no. 1(2) (1): 69-78. Accessed April 20, 2021. https://jamt.utem.edu.my/jamt/article/view/4270.