L. Adriani, D. Latipudin, R. Balia, and T. Widjastuti, “Improvement of Small Intestine Morphometry in Broiler Chicken Using Fermented Cow and Soymilk as Probiotic”, Int. J. Poult. Sci., vol. 18, no. 6, pp. 255–259, May 2019, doi: 10.3923/ijps.2019.255.259.