Sirait, T. S., A. Arianto, and A. Dalimunthe. “Phytochemical Screening of Cinnamon Bark (Cinnamomum Burmanii) (C. Ness & T. Ness) C. Ness Ex Blume Ethanol Extract and Antioxidant Activity Test With DPPH (2,2-Diphenyl-1-Picrylhydrazyl) Method.”. International Journal of Science, Technology & Management, Vol. 4, no. 1, Jan. 2023, pp. 254-9, doi:10.46729/ijstm.v4i1.739.