Zela, Z., and A. W. M. Diah. “Antioxidant Activity Test of Muntingia Calabura L. Fruit Extract Using 1,1-Diphenyl-2-Picrylhydrazyl”. Media Eksakta, vol. 17, no. 2, Nov. 2021, pp. 85-90, doi:10.22487/me.v17i2.1108.