APA (7 वां संस्करण) प्रशस्ति पत्र
Armstrong, A. K. (1987). Mineral Resources of the Greenwater Valley Wilderness Study Area, Inyo County, California. United States Government Print. Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Armstrong, Augustus K. Mineral Resources of the Greenwater Valley Wilderness Study Area, Inyo County, California. Washington: United States Government Print. Office, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Armstrong, Augustus K. Mineral Resources of the Greenwater Valley Wilderness Study Area, Inyo County, California. United States Government Print. Office, 1987.
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