Alfi, Nur Ainin. “Uji Kandungan Vitamin C Buah Rosella (Hibiscus Sabdariffa L) Menggunakan Spektrofotometer UV-VIS”. Cokroaminoto Journal of Biological Science, vol. 8, no. 2, Aug. 2026, pp. 27-30, https://science.e-journal.my.id/cjbs/article/view/303.