Não informado. (1958). Epidemiological bulletin. Department of National Health and Welfare, Epidemiological Division.
Chicago-referens (17:e uppl.)Não informado. Epidemiological Bulletin. Ottawa: Department of National Health and Welfare, Epidemiological Division, 1958.
MLA-referens (8:e uppl.)Não informado. Epidemiological Bulletin. Department of National Health and Welfare, Epidemiological Division, 1958.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.