McGill, E., Kamyab, A. and Firman , J. (2012) “Low Crude Protein Corn and Soybean Meal Diets with Amino Acid Supplementation for Broilers in the Starter Period. 2. Effects of Feeding 13% Crude Protein”, International Journal of Poultry Science, 11(3), pp. 166–171. doi:10.3923/ijps.2012.166.171.