Não informado. Studies in Geography. Northwestern University, Department of Geography.
Chicagoスタイル(17版)引用形式Não informado. Studies in Geography. Evanston, Ill: Northwestern University, Department of Geography.
MLA(8版)引用形式Não informado. Studies in Geography. Northwestern University, Department of Geography.
警告: この引用は必ずしも正確ではありません.