R. Handayani and H. Rusmita, “Uji Daya Hambat Ekstrak Etanol Akar Kelakai (Stenochlaena palustris (Burm. F.) Bedd.) terhadap Bakteri Escherichia coli: Inhibitory Test of Ethanol Extracts of Free Roots (Stenochlaena palustris (Burm. F.) Bedd.) on Escherichia coli”, J Surya Medika, vol. 2, no. 2, pp. 13–26, Feb. 2017.