A. Makuasa, D. A., & Ningsih, P. (2020). The Analysis of Total Flavonoid Levels In Young Leaves and Old Soursop Leaves (Annona muricata L.) Using UV-Vis Sepctrofotometry Methods. Journal of Applied Science, Engineering, Technology, and Education, 2(1), 11-17. https://doi.org/10.35877/454RI.asci2133