Chrisnasari, Ruth, 		Yonardi, Angelina, 		Lie, Hesti, 		Widi, Restu, AND 		Purwanto, Maria.
" Immobilization of Lipase on Surfactant-Modified Bentonite and Its Application for Biodiesel Production from Simulated Waste Cooking Oil" <em>UNEJ e-Proceeding</em> [Online], (24 February 2016)