Pertiwi, D., & Widyaningrum, T. (2022). The Effect of Crude Enzyme Ratio Aspergillus niger and Trichoderma reesei Against Sugar and Bioethanol Content of Fermented Jackfruit Skin (Artocarpus heterophyllus Lamk.). Metamorfosa: Journal Of Biological Sciences, 9(2), 390-396. doi:10.24843/metamorfosa.2022.v09.i02.p18