United States. National Advisory Committee for Aeronautics. (1937). Torsion tests of tubes. [s.n.].
Chicago Style (17th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Torsion Tests of Tubes. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Torsion Tests of Tubes. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.