United States. Civil Aeronautics Authority. (1939). Directory of airports and seaplane bases. U.S. Govt. Print. Off..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Civil Aeronautics Authority. Directory of Airports and Seaplane Bases. Washington: U.S. Govt. Print. Off., 1939.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States. Civil Aeronautics Authority. Directory of Airports and Seaplane Bases. U.S. Govt. Print. Off., 1939.
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