Não informado. (1944). Industrial health bulletin. Department of National Health and Welfare, Industrial Health Division.
Cita Chicago Style (17a ed.)Não informado. Industrial Health Bulletin. Ottawa: Department of National Health and Welfare, Industrial Health Division, 1944.
Cita MLA (8a ed.)Não informado. Industrial Health Bulletin. Department of National Health and Welfare, Industrial Health Division, 1944.
Precaución: Estas citas no son 100% exactas.