Hamed, A. H. M., I. I. Hamid, Y. M. Yagoub, and M. E. Elimam. “Effects of Dietary Protein Level on Egg Production and Hatchability in Japanese Quail(<i>Coturnix japonica</I>) in Khartoum State, Sudan”. Asian Journal of Agriculture and Food Sciences, vol. 4, no. 2, Apr. 2016, https://ajouronline.com/index.php/AJAFS/article/view/3638.