Ifemeje, J. C., M. O. Ifemeje, C. Egbuna, and M. C. Olisah. “Proximate, Phytochemical and Antioxidant Mineral Compositions of Four Different Brands of Tea”. Advanced Journal of Graduate Research, vol. 8, no. 1, Feb. 2020, pp. 1-7, doi:10.21467/ajgr.8.1.1-7.