Horpiencharoen, Wantida, Sukanya Thongratsakul, and Chaithep Poolkhet. 2020. “Risk Factors Associated With Environmental Mastitis in Clinical Cases at Small Dairies in Western Thailand”. Agriculture and Natural Resources 54 (2). Bangkok, Thailand:190–196. https://li01.tci-thaijo.org/index.php/anres/article/view/242185.