“Pemanfaatan Karbon Aktif Ampas Tebu Dalam Mereduksi Asam Lemak Bebas (Free Fatty Acid) Untuk Pemurnian Minyak Jelantah Sebagai Biodiesel: Utilization of Sugar Cane Activated Carbon in Reducing Free Fatty Acid for Purification of Used Oil As Biodiesel”. Talenta Conference Series: Science and Technology (ST), vol. 2, no. 1, Feb. 2019, pp. 293-6, https://doi.org/10.32734/st.v2i1.361.