Não informado. Studies from the Connaught Medical Research Laboratories and School of Hygiene. University of Toronto.
Chicago-referens (17:e uppl.)Não informado. Studies from the Connaught Medical Research Laboratories and School of Hygiene. Toronto, Canada: University of Toronto.
MLA-referens (8:e uppl.)Não informado. Studies from the Connaught Medical Research Laboratories and School of Hygiene. University of Toronto.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.