N. Bialangi1, A. Mustapa2, Y. Salimi1, A. Widiantoro3, and B. Situmeang4, “Isolation of Steroid Compounds from Suruhan (Peperomia pellucida L. Kunth) and Their Antimalarial Activity”, ajc, vol. 30, no. 8, pp. 1751–1754, Jun. 2018.