Hasibuan S, Sahirman S, Ma’ruf A. The Quality of Transparent Soap from Farmer’s Crude Calophyllum Seed Oil. Int. J. Adv. Sci. Eng. Inf. Technol. [Internet]. 2014 Oct. 10 [cited 2024 Jun. 2];4(5):349-53. Available from: http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/432