B. Ekpo, P., U. U. Uno, A. J. Umoyen, and L. E. Okonko. “Spermatotoxic Effects of Some Medicinal Plants (Carica Papaya, Hibiscus Rosa-Sinensis and Ipomoea Batatas) on Sperm Quality and Testicular Weight in Male African Catfish (Clarias Gariepinus)”. International Journal of Biochemistry Research & Review 22, no. 3 (July 10, 2018): 1-8. Accessed January 28, 2020. http://journalijbcrr.com/index.php/IJBCRR/article/view/3635.