Não informado. Puerto Rico Health Bulletin. Insular Department of Health.
Chicagoスタイル(17版)引用形式Não informado. Puerto Rico Health Bulletin. San Juan: Insular Department of Health.
MLA(8版)引用形式Não informado. Puerto Rico Health Bulletin. Insular Department of Health.
警告: この引用は必ずしも正確ではありません.