Não informado. (1953). Occupational health review. Department of National Health and Welfare.
Chicagoスタイル(17版)引用形式Não informado. Occupational Health Review. Ottawa: Department of National Health and Welfare, 1953.
MLA(8版)引用形式Não informado. Occupational Health Review. Department of National Health and Welfare, 1953.
警告: この引用は必ずしも正確ではありません.