Annisa, W., A. Sadeli, M. Tafsin, and S. Umar. “Effect of Extracts and Flour of Batak Onions on the Number of Escherichia Coli Colonies in Broiler”. Indonesian Journal of Agricultural Research, vol. 5, no. 2, Mar. 2023, pp. 159 -69, doi:10.32734/injar.v5i2.6215.