Semple, E. C., & Ratzel, F. (1968). Influences of geographic environment, on the basis of Ratzel's system of anthropo-geography. Russell & Russell.
Chicagoスタイル(17版)引用形式Semple, Ellen Churchill, , Friedrich Ratzel. Influences of Geographic Environment, on the Basis of Ratzel's System of Anthropo-geography. New York: Russell & Russell, 1968.
MLA(8版)引用形式Semple, Ellen Churchill, , Friedrich Ratzel. Influences of Geographic Environment, on the Basis of Ratzel's System of Anthropo-geography. Russell & Russell, 1968.
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