Dyfyniad APA

Cotter, C. H. (1966). The astronomical and mathematical foundations of geography. Hollis & Carter.

Dyfyniad Arddull Chicago

Cotter, Charles H. The Astronomical and Mathematical Foundations of Geography. London: Hollis & Carter, 1966.

Dyfyniad MLA

Cotter, Charles H. The Astronomical and Mathematical Foundations of Geography. Hollis & Carter, 1966.

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