A. A. Putri, H. R. Rija’i, and L. Rijai, “Uji Kualitatif Aktivitas Radikal Bebas DPPH dari Daun Penggugut (Knema pallens W.J.deWilde): Qualitative Test of DPPH Radical Scavenging Activity from Penggugut Leaves (Knema pallens W.J.deWilde)”, Proc. Mul. Pharm. Conf., vol. 14, no. 1, pp. 8–13, Dec. 2021.