Nnamonu, E. I., E. E. Nkitnam, F. J. Ugwu, O. C. Ejilibe, S. U. Ezenwosu, and G. U. Ogbodo. “Physicochemical Assessment of Vulnerability of the River Ebenyi in Eha-Amufu and Environs, Southeast Nigeria”. Recent Advances in Biological Research Vol. 6, Jan. 2020, pp. 54-63, https://stm1.bookpi.org/index.php/rabr-v6/article/view/863.