Andriana, A., and M. R. Jura. “Antioxidant Activity Test of Ethanol Extract of Ripe and Young Cocoa Pods (Theobroma Cacao L.)”. Jurnal Akademika Kimia, vol. 11, no. 1, Feb. 2022, pp. 64-71, doi:10.22487/j24775185.2022.v11.i1.pp64-71.