Surahmanto, F., D. Nurhadiyanto, Mujiyono, C. Areeprasert, dan M. Syamsiro. Hydrothermal Treatment of Herb Residue for Solid Fuel Production. Vol. 21, no. 1, Juni 2021, hlm. 83-92, https://jurnal.ugm.ac.id/v3/AJChE/article/view/9155.