Não informado. (1918). Commonwealth. Department of Public Health.
Chicagoスタイル(17版)引用形式Não informado. Commonwealth. Boston, Mass: Department of Public Health, 1918.
MLA(8版)引用形式Não informado. Commonwealth. Department of Public Health, 1918.
警告: この引用は必ずしも正確ではありません.