Keziah , Ibemenuga Nwamaka, et al. “ Species Composition of Rotifers in a Tropical Lotic Freshwater Ecosystem in South - Eastern Nigeria. ”. African Journal of Education,Science and Technology (AJEST), vol. 3, no. 1, Jan. 2016, pp. Pg 201-207, http://ajest.org/index.php/ajest/article/view/588.