R. . Ridara, M. Muhammad, A. . Setiawan, S. . Riskina, and S. Nurjannah, “Characterization of Bioethanol from Tuber of Porang Waste Fermented with Saccharomyces cerevisiae Enzyme: Effect of Fermentation Time and Yeast Ratio”, J. Tek. Kim. Ling, vol. 7, no. 2, pp. 48–57, Oct. 2023.