“Antioxidant Activity of Ethanol Extract Combinations of Jeruk Purut Leaf (Citrus Hystrix Dc.) and Jati Belanda Leaf (Guazuma Ulmifolia L.)”. Journal of Tropical Pharmacy and Chemistry 4, no. 4 (December 31, 2018): 163–167. Accessed September 16, 2025. https://jtpc.ff.unmul.ac.id/index.php/jtpc/article/view/266.