Não informado. (2008). Report of the Commissioner of Health of Porto Rico. Bureau of Insular Affairs.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report of the Commissioner of Health of Porto Rico. Washington: Bureau of Insular Affairs, 2008.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report of the Commissioner of Health of Porto Rico. Bureau of Insular Affairs, 2008.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.