Dyfyniad APA

Hartshorne, R. (1939). The nature of geography: A critical survey of current thought in the light of the past. The Association.

Dyfyniad Arddull Chicago

Hartshorne, Richard. The Nature of Geography: A Critical Survey of Current Thought in the Light of the Past. Lancaster, Pa: The Association, 1939.

Dyfyniad MLA

Hartshorne, Richard. The Nature of Geography: A Critical Survey of Current Thought in the Light of the Past. The Association, 1939.

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