Satria, Romi, Ali Rakhman Hakim, and Putri Vidiasari Darsono. 2022. “Determination of Total Flavonoid Content of the N-Hexane Fraction of Gelinggang Leaf Extract by UV-Vis Spectrophotometric Method”. Journal of Engineering, Technology, and Applied Science (JETAS) 4 (1), 33-46. https://doi.org/10.36079/lamintang.jetas-0401.353.