G. S. Pratomo, N. Chusna, and M. Priyadi, “Uji Potensi Daya Hambat Ekstrak Metanol Biji Jintan Hitam (Nigella Sativa L.) Terhadap Bakteri Streptococcus: Inhibitory Potential Test of Black Cumin Seeds (Nigella Savita L.) Methanol Exstract Against Streptoccus Bacteria”, J Surya Medika, vol. 6, no. 1, pp. 18–21, Aug. 2020.