Gould, L. M. (1958). The Polar regions in their relation to human affairs. The American Geographical Society.
Citace podle Chicago (17th ed.)Gould, Laurence M. The Polar Regions in Their Relation to Human Affairs. New York: The American Geographical Society, 1958.
Citace podle MLA (9th ed.)Gould, Laurence M. The Polar Regions in Their Relation to Human Affairs. The American Geographical Society, 1958.
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