United States. Navy Department. Bureau of Aeronautics. (1918). HS-2L flying boat hulls. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Navy Department. Bureau of Aeronautics. HS-2L Flying Boat Hulls. Washington: U.S. GPO, 1918.
MLA (9th ed.) CitationUnited States. Navy Department. Bureau of Aeronautics. HS-2L Flying Boat Hulls. U.S. GPO, 1918.
Warning: These citations may not always be 100% accurate.