Khairunnisa Aulia Prayudi, Sasqia, et al. “Detection of Genes on Eschericia Coli Producing Extended Spectrum β-Lactamase Isolated from the Small Intestine of Ducks in Traditional Markets Surabaya City, Indonesia”. Journal of Advanced Veterinary Research, vol. 13, no. 8, Oct. 2023, pp. 1600-8, https://advetresearch.com/index.php/AVR/article/view/1473.