KARNNASUTA, Sujinna, Vittaya PUNSUVON, and Rayakorn NOKKAEW. 2013. “Biodiesel Production from Waste Coconut Oil in Coconut Milk Manufacturing”. Walailak Journal of Science and Technology (WJST) 12 (3):291-98. https://wjst.wu.ac.th/index.php/wjst/article/view/687.