Suraningsih, Dheti, and Trianik Widyaningrum. “Pengaruh Konsentrasi Crude Enzim Bacillus Subtilis IFO 13719 Terhadap Kadar Gula Dan Etanol Fermentasi Kulit Coffea Arabica Menggunakan Zymomonas Mobilis IFO 13756”. Bioscientist : Jurnal Ilmiah Biologi 10, no. 2 (December 30, 2022): 837–848. Accessed August 18, 2025. https://e-journal3.undikma.ac.id/index.php/bioscientist/article/view/6097.