Natasya, E., Daulay, A. S., Ridwanto, R., & Rahayu, Y. P. (2023). Determination of total flavonoid content of wood extract raru (Cotylelobium lanceolatum Craib ) based on differences in ethanol concentration with Uv-Vis spectrophotometry methods. Journal of Pharmaceutical and Sciences, 6(4), 1804–1810. https://doi.org/10.36490/journal-jps.com.v6i4.305