Cortés, M., B. Vallejo, L. Gayol, and R. Montañez. “Socioeconomic Data, Management Practices and Frequency of Diseases or Health Conditions in Puerto Rico Dairies.”. The Journal of Agriculture of the University of Puerto Rico, vol. 94, no. 3-4, June 2010, pp. 255-68, doi:10.46429/jaupr.v94i3-4.2722.