Não informado. Studies from the Connaught Medical Research Laboratories and School of Hygiene. University of Toronto.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Studies from the Connaught Medical Research Laboratories and School of Hygiene. Toronto, Canada: University of Toronto.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Studies from the Connaught Medical Research Laboratories and School of Hygiene. University of Toronto.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.