Mardhiyyah, S., Zakiyah, M., Renata, E. D., Tjahjandarie, T. S., Supratman, U., Retnowati, R., Saputri, R. D., & Tanjung, M. (2023). Cytotoxic Activity of Xanthones from the Stem Bark of Cratoxylum sumatranum: http://www.doi.org/10.26538/tjnpr/v7i9.9. Tropical Journal of Natural Product Research (TJNPR), 7(9), 3908-3910. https://www.tjnpr.org/index.php/home/article/view/2593