Não informado. (1950). Canadian Geographer. Canadian Association of Geographers.
Chicagoスタイル(17版)引用形式Não informado. Canadian Geographer. Ottawa: Canadian Association of Geographers, 1950.
MLA(8版)引用形式Não informado. Canadian Geographer. Canadian Association of Geographers, 1950.
警告: この引用は必ずしも正確ではありません.