United States. National Advisory Committee for Aeronautics. (1939). Free℗--spinning wind-tunnel tests of low-wing monoplane with systematic changes in wings and tails: 4, Effect of center-of℗--gravity location. [s.n.].
Chicago Style (17th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Free℗--spinning Wind-tunnel Tests of Low-wing Monoplane with Systematic Changes in Wings and Tails: 4, Effect of Center-of℗--gravity Location. [Washington]: [s.n.], 1939.
MLA (9th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Free℗--spinning Wind-tunnel Tests of Low-wing Monoplane with Systematic Changes in Wings and Tails: 4, Effect of Center-of℗--gravity Location. [s.n.], 1939.
Warning: These citations may not always be 100% accurate.