Ullah, M., K. Islam, M. Akbar, A. Khaleduzzaman, and M. Debi. “Effect Of Levels And Sources Of Protein On The Performance And Nutrient Digestibility In Black Bengal Goat”. Bangladesh Journal of Animal Science, vol. 38, no. 1-2, Feb. 2012, pp. 53-60, doi:10.3329/bjas.v38i1-2.9912.