Sitepu, Lorena, and Siti Fatimah. “Characterization of Extracted Gelatin from Beef Bones Using NaOH Alkaline Pretreatment Process”. Jurnal Kartika Kimia 5, no. 1 (May 25, 2022): 72-78. Accessed November 24, 2024. https://jkk.unjani.ac.id/index.php/jkk/article/view/106.