United States. National Advisory Committee for Aeronautics. (1939). Effects of some common surface irregularities on wing drag. [s.n.].
Chicago Style (17th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Effects of Some Common Surface Irregularities on Wing Drag. [Washington]: [s.n.], 1939.
MLA (9th ed.) CitationUnited States. National Advisory Committee for Aeronautics. Effects of Some Common Surface Irregularities on Wing Drag. [s.n.], 1939.
Warning: These citations may not always be 100% accurate.