Não informado. (2008). Report of the Commissioner of Health of Porto Rico. Bureau of Insular Affairs.
Citace podle Chicago (17th ed.)Não informado. Report of the Commissioner of Health of Porto Rico. Washington: Bureau of Insular Affairs, 2008.
Citace podle MLA (8th ed.)Não informado. Report of the Commissioner of Health of Porto Rico. Bureau of Insular Affairs, 2008.
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