Surahmanto, Fredy, Didik Nurhadiyanto, Mujiyono, Chinnathan Areeprasert, dan Mochamad Syamsiro. “Hydrothermal Treatment of Herb Residue for Solid Fuel Production” 21, no. 1 (Juni 30, 2021): 83-92. Diakses Juni 8, 2025. https://jurnal.ugm.ac.id/v3/AJChE/article/view/9155.