Não informado. (1944). Industrial health bulletin. Department of National Health and Welfare, Industrial Health Division.
Citação do estilo Chicago (17ª ed.)Não informado. Industrial Health Bulletin. Ottawa: Department of National Health and Welfare, Industrial Health Division, 1944.
Citação MLA (8ª ed.)Não informado. Industrial Health Bulletin. Department of National Health and Welfare, Industrial Health Division, 1944.
警告：這些引文格式不一定是100％准確.