रिकॉर्ड उद्धरण

APA (7 वां संस्करण) प्रशस्ति पत्र
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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
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.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
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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