Etuk, H. S., G. A. . Ebong, E. U. . Dan, and H. F. Udoh. “Probability of Health Risk, Bioaccumulation, and Geochemical Fractions of Toxic Elements in Soils and Vegetables Impacted by Manures in Nigeria”. Environmental Protection Research, vol. 2, no. 2, July 2022, pp. 75-94, doi:10.37256/epr.2220221485.