Radite Yogaswara, Maria Ludya Pulung, Ahmad Fudholi. “Antioxidant Activity of 15 Manokwari Medicinal Plants Using DPPH Assay”. International Journal of Advanced Science and Technology 29, no. 05 (May 25, 2020): 7592-7599. Accessed April 2, 2026. http://sersc.org/journals/index.php/IJAST/article/view/18249.