AL.Bayatti, K. K., S. K. Mahmood, and A. A. Abdul-Abbas. “Protection of Chicken Against Bacterial Infection by Immunization With Bacterial Subcellular Fractions”. Al Mustansiriyah Journal of Pharmaceutical Sciences, vol. 4, no. 1, June 2007, pp. 80-85, doi:10.32947/ajps.v4i1.382.