Zuluaga, Angélica M., and José R. Martínez. “Serum Cortisol Concentration in the Colombian Creole Horse”. Revista Colombiana de Ciencias Pecuarias 30, no. 3 (July 24, 2017): 231–238. Accessed January 23, 2025. https://revistas.udea.edu.co/index.php/rccp/article/view/327153.