“PENENTUAN KADAR FLAVONOID TOTAL EKSTRAK AIR BUNGA ROSELLA (Hibiscus sabdariffa L) SECARA SPEKTOFOTOMETRI UV-Vis”. Journal of Pharmaceutical Science and Herbal Technology 3, no. 1 (Juli 21, 2018): 9–15. Diakses Oktober 15, 2026. https://ojs.institutnh.ac.id/index.php/jpsht/article/view/272.