Ginting, Shanta Noventhya, et al. “The Optimization of Acid Hydrolysis on Bioethanol Production from Durian Peel Waste (Durio Zibethinus Murr)”. Jurnal Pendidikan Kimia, vol. 10, no. 2, Aug. 2018, pp. 382-6, doi:10.24114/jpkim.v10i2.10917.