Cornelison, J.; Yan, F.; Watkins, S.; Rigby, L.; Segal, J. B.; Waldroup, P. Evaluation of Hops (Humulus Iupulus) As an Antimicrobial in Broiler Diets. Int. J. Poult. Sci. 2006, 5 (2), 134–136. https://doi.org/10.3923/ijps.2006.134.136.