United States. Department of the Interior. Division of Information. (1964). Natural resources of Montana "the Treasure State.". U.S. Govt. Print. Off..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Department of the Interior. Division of Information. Natural Resources of Montana "the Treasure State.". [Washington: U.S. Govt. Print. Off., 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States. Department of the Interior. Division of Information. Natural Resources of Montana "the Treasure State.". U.S. Govt. Print. Off., 1964.
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