Alıntılar

APA (7. basım) Alıntı
Estados Unidos Geological Survey. (1928). General geologic map and sections of the Keweenawan and associated rocks in the lake superior copper district. U. S. Geological Survey.
Chicago Style (17. basım) Atıf
Estados Unidos Geological Survey. General Geologic Map and Sections of the Keweenawan and Associated Rocks in the Lake Superior Copper District. U. S. Geological Survey, 1928.
MLA (9th ed.) Atıf
Estados Unidos Geological Survey. General Geologic Map and Sections of the Keweenawan and Associated Rocks in the Lake Superior Copper District. U. S. Geological Survey, 1928.
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