Antioxidant Activity of Ethanol Extract Combinations of Jeruk Purut Leaf (Citrus hystrix Dc.) and Jati Belanda Leaf (Guazuma ulmifolia L.). J. Trop. Pharm. Chem [Internet]. 2018 Dec. 31 [cited 2025 Sep. 16];4(4):163-7. Available from: https://jtpc.ff.unmul.ac.id/index.php/jtpc/article/view/266