Não informado. Porto Rico Review of Public Health and Tropical Medicine. Department of Health of Puerto Rico.
Cita Chicago Style (17a ed.)Não informado. Porto Rico Review of Public Health and Tropical Medicine. San Juan: Department of Health of Puerto Rico.
Cita MLA (8a ed.)Não informado. Porto Rico Review of Public Health and Tropical Medicine. Department of Health of Puerto Rico.
Precaución: Estas citas no son 100% exactas.