APA (7th ed.) Citation

United States. National Advisory Committee for Aeronautics. (1939). Local instability of centrally loaded columns of channel section and Z℗--section. [s.n.].

Chicago Style (17th ed.) Citation

United States. National Advisory Committee for Aeronautics. Local Instability of Centrally Loaded Columns of Channel Section and Z℗--section. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. National Advisory Committee for Aeronautics. Local Instability of Centrally Loaded Columns of Channel Section and Z℗--section. [s.n.], 1939.