Shima, K. F., T. M. Tion, I. J. Mosugu, and T. T. Apaa. “Retrospective Study of Disease Incidence and Other Clinical Conditions Diagnosed in Owned Dogs in Delta State, Nigeria”. Journal of Advanced Veterinary and Animal Research, vol. 2, no. 4, Dec. 2015, pp. 435-49, https://www.banglajol.info/index.php/JAVAR/article/view/26092.