Onu Okpara, I. Q., S. Oranusi, and H. Okagbue. “Production of Probiotic-Fortified Composite Poultry Feed from Food and Agricultural Waste Material”. Journal of Advanced Veterinary and Animal Research, vol. 6, no. 4, Nov. 2019, pp. 544-8, https://banglajol.info/index.php/JAVAR/article/view/44145.