P. Salempa, S. Salnus, and Hasri, “IDENTIFICATION OF SECONDARY METABOLITE COMPOUNDS USING GC-MS IN METHANOL EXTRACTS OF KEISSI TUBERS (Stephania venosa (Blume) Spreng)”, Jurnal Bioteknologi dan Biosains Indonesia, vol. 12, no. 2, pp. 187–193, Dec. 2025.