Não informado. (1930). National Institute of Health bulletin. U.S. Public Health Service.
Chicagoスタイル(17版)引用形式Não informado. National Institute of Health Bulletin. Washington: U.S. Public Health Service, 1930.
MLA(8版)引用形式Não informado. National Institute of Health Bulletin. U.S. Public Health Service, 1930.
警告: この引用は必ずしも正確ではありません.