United States. Department of the Interior. Office of Information. (1964). Natural resources of Oregon; "the Beaver State.". For sale by the Supt. of Docs., U.S. Govt. Print. Off..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Department of the Interior. Office of Information. Natural Resources of Oregon; "the Beaver State.". [Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States. Department of the Interior. Office of Information. Natural Resources of Oregon; "the Beaver State.". For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1964.
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