Tobing, Joshua H.L., Donn R. Ricky, and Desi Natalia Sari. “THE ANTIOXIDANT ACTIVITY OF THE EXTRACT OF AFRICAN LEAVES (VERNONIA AMYGDALINA) USING 1,1-DIPHENYL-2- PICRYLHYDRAZYL (DPPH) METHOD”. 11th International Scholars Conference 4, no. 1 (October 25, 2016): 74. Accessed November 22, 2024. https://jurnal.unai.edu/index.php/isc/article/view/1845.