Usman, M., J. P. Fabiyi, A. A. Mohammed, U. M. Mera, A. Mahmuda, M. O. Alayande, M. D. Lawal, and A. Danmaigoro. 2012. “Ectoparasites and Haemoparasites of Chickens in Sokoto, Northwestern Nigeria”. Scientific Journal of Zoology 1 (3):74-78. https://www.sjournals.com/index.php/sjz/article/view/1181.