Knowles, R. (1981). Economic and Social Geography (Fourth Edition). ELSEVIER.
Chicagoスタイル(17版)引用形式Knowles, R. Economic and Social Geography (Fourth Edition). ELSEVIER, 1981.
MLA(8版)引用形式Knowles, R. Economic and Social Geography (Fourth Edition). ELSEVIER, 1981.
警告: この引用は必ずしも正確ではありません.