“PENETAPAN KADAR FLAVONOID EKSTRAK DAUN KELAKAI (Stenochlaena Palustris (Burm. F.) Bedd.) DENGAN METODE SPEKTROFOTOMETRI UV-VIS”. Jurnal Riset Kefarmasian Indonesia, vol. 1, no. 1, Jan. 2019, pp. 11-20, https://doi.org/10.33759/jrki.v1i1.46.