Vargas, Mabel Rocío, et al. “Microbiologic Analysis and Its Relation to the Hygienic Quality of Milk Produced in the Region of Alto De Chicamocha (Department of Boyacá)”. Revista De Medicina Veterinaria, no. 14, Jan. 2007, pp. 61-83, https://veterinaria.lasalle.edu.co/article/view/1340.