“PENENTUAN KADAR FLAVONOID TOTAL EKSTRAK AIR BUNGA ROSELLA (Hibiscus sabdariffa L) SECARA SPEKTOFOTOMETRI UV-Vis” (2018) Journal of Pharmaceutical Science and Herbal Technology, 3(1), pp. 9–15. Available at: https://ojs.institutnh.ac.id/index.php/jpsht/article/view/272 (Accessed: 15 October 2026).