Ramadhani, Nurfijrin, et al. “Analisis Total Fenol Dan Flavonoid Ekstrak Etanol Kulit Batang Sungkai (Peronema Canescens Jack)”. PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia), vol. 19, no. 1, July 2022, pp. 66-79, doi:10.30595/pharmacy.v19i1.12554.