F. E. Nkemehule, O. C. Igwe, A. Usman, and H. A. Afonja, “Integrative chromatographic and spectrophotometric analysis of the phytoconstituents, microbial limit test and antioxidant activity of a polyherbal immune booster”, TJPPS, vol. 5, no. 4, pp. 533–540, Aug. 2026.