M. Barrios, J. Saini, C. Rude, R. Beyer, and D. Fung, “The Effect of Altering Feed Formula, Processing and Supplements on Clostridium spp. In Broilers Using the Fung Double Tube Method”, Int. J. Poult. Sci., vol. 18, no. 11, pp. 544–554, Oct. 2019, doi: 10.3923/ijps.2019.544.554.