H. . Mungadi, U.M. Mera, Y.A. Adamu, U. Musa, and C.R. Achi, “Sero-prevalence of infectious bronchitis antibodies in local chickens in live bird markets in Sokoto State, Nigeria”, Sci. J. Biol. Sci., vol. 4, no. 7, pp. 53-56, Sep. 2015.