Akawu Anzaku, S. . . ., J. U. Umoh, P. A. Abdu, J. . Kabir, and A. . Bala. “Serological Study of Newcastle Disease in Local Chickens in the Federal Capital Territory, Abuja, Nigeria”. Scientific Journal of Veterinary Advances, vol. 3, no. 10, Oct. 2014, pp. 101-3, http://sjournals.com/index.php/sjva/article/view/1434.