Retnosari, Diana, et al. “Antimalarial Activity of Crude Bark Extract of Pterocarpus Indicus Willd. Against Plasmodium Falciparum Strain 3D7: Http: www.doi.org 10.26538 Tjnpr V7i9.6”. Tropical Journal of Natural Product Research (TJNPR), vol. 7, no. 9, Oct. 2023, pp. 3893-7, https://tjnpr.org/index.php/home/article/view/2590.