Não informado. Porto Rico Health Review. Department of Health of Puerto Rico.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Porto Rico Health Review. San Juan: Department of Health of Puerto Rico.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Porto Rico Health Review. Department of Health of Puerto Rico.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.