Não informado. (1950). Canadian Geographer. Canadian Association of Geographers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Geographer. Ottawa: Canadian Association of Geographers, 1950.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Geographer. Canadian Association of Geographers, 1950.
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