Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Estados Unidos Geological Survey. (19). Map of copper range of Michigan. U. S. Geological Survey.
Chicago Style (17th ed.) Zitazioa
Estados Unidos Geological Survey. Map of Copper Range of Michigan. U. S. Geological Survey, 19.
MLA (9th ed.) Zitazioa
Estados Unidos Geological Survey. Map of Copper Range of Michigan. U. S. Geological Survey, 19.
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