James, G. W. The Grand Canyon of Arizona: How to See It.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJames, George Wharton. The Grand Canyon of Arizona: How to See It.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJames, George Wharton. The Grand Canyon of Arizona: How to See It.
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