br Karo, Reh Malem, Jhon Patar Sinurat, Fioni Fioni, and Dewi Fibrini. “Analisis Kadar Zat Besi Pada Sari Kedelai Kemasan Dengan Metode Spektrofotometri UV-VIS”. Jurnal Prima Medika Sains 3, no. 2 (September 30, 2021): 74–77. Accessed April 3, 2026. http://139.162.50.187/index.php/jpms/article/view/2038.