Ponsard, C. (1958). Historie des theories economiques spatiales. Armand Colin.
Tohutoru Kātū Chicago (17th ed.)Ponsard, Claude. Historie Des Theories Economiques Spatiales. París: Armand Colin, 1958.
Tohutoro MLA (9th ed.)Ponsard, Claude. Historie Des Theories Economiques Spatiales. Armand Colin, 1958.
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