Kgwatalala , Patrick M., et al. “Comparative Growth Performance of Cross-Bred (50% Orpington: 25% Australorp: 25% Tswana) and Pure-Bred Tswana Chickens under an Intensive Management System”. International Journal of Poultry Science, vol. 14, no. 2, Jan. 2015, pp. 63–66, https://doi.org/10.3923/ijps.2015.63.66.