Não informado. (1953). Occupational health bulletin. Department of National Health and Welfare, Industrial Health Division.
Style de citation Chicago (17e éd.)Não informado. Occupational Health Bulletin. Ottawa: Department of National Health and Welfare, Industrial Health Division, 1953.
Style de citation MLA (8e éd.)Não informado. Occupational Health Bulletin. Department of National Health and Welfare, Industrial Health Division, 1953.
Attention : ces citations peuvent ne pas être correctes à 100%.