Nasution, Kartika Zsaskia, Anny Sartika Daulay, Ridwanto Ridwanto, and Haris Munandar Nasution. “Determination of Flavonoid Levels of Raru Bark Methanol Extract (Cotylelobium Lanceolatum Craib) on Variations in Solvent Concentration Using UV-Vis Spectrophotometry Method”. Journal of Pharmaceutical and Sciences 8, no. 1 (March 10, 2025): 437–449. Accessed January 26, 2026. https://journal-jps.com/new/index.php/jps/article/view/724.