Nur Farah Hani Muhamad, et al. “Effect of Packaging Materials and Storage on Physicochemical Properties and Anthocyanin Contents of Red Cabbage-Roselle Blended Drink”. Malaysian Journal of Science Health & Technology, vol. 8, no. 1, Jan. 2022, pp. 1-8, doi:10.33102/mjosht.v8i1.239.