Natasya, E., Daulay, A. S., Ridwanto, R. and 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), pp. 1804–1810. doi: 10.36490/journal-jps.com.v6i4.305.