Bailey, J.S., A. Rolon, C.L. Hofacre, P.S. Holt, J.L. Wilson, D.E. Cosby, L.J. Richardson, and N.A. Cox. 2007. “Resistance to Challenge of Breeders and Their Progeny With and Without Competitive Exclusion Treatment to Salmonella Vaccination Programs in Broiler Breeders”. International Journal of Poultry Science 6 (6): 386–392. https://doi.org/10.3923/ijps.2007.386.392.