Salazar, L. F., J. M. Herrera, J. J. R. Zúñiga, and G. Dolz. “Chlamydia Abortus in Dairy Farms in Costa Rica”. Journal of Advanced Veterinary Research, vol. 5, no. 4, Oct. 2015, pp. 179-85, https://advetresearch.com/index.php/AVR/article/view/63.