Não informado. (1950). Canadian Geographer. Canadian Association of Geographers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Canadian Geographer. Ottawa: Canadian Association of Geographers, 1950.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Canadian Geographer. Canadian Association of Geographers, 1950.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.