Não informado. (1949). Industrial health review. Department of National Health and Welfare.
Chicago-Zitierstil (17. Ausg.)Não informado. Industrial Health Review. Ottawa: Department of National Health and Welfare, 1949.
MLA-Zitierstil (8. Ausg.)Não informado. Industrial Health Review. Department of National Health and Welfare, 1949.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.