APA (7th ed.) Citation

United States. National Advisory Committee for Aeronautics. (1935). Boulton Paul P.71A commercial airplane (British): A two-engine biplane. National Advisory Committee for Aeronautics.

Chicago Style (17th ed.) Citation

United States. National Advisory Committee for Aeronautics. Boulton Paul P.71A Commercial Airplane (British): A Two-engine Biplane. Washington, [D.C.]: National Advisory Committee for Aeronautics, 1935.

MLA (9th ed.) Citation

United States. National Advisory Committee for Aeronautics. Boulton Paul P.71A Commercial Airplane (British): A Two-engine Biplane. National Advisory Committee for Aeronautics, 1935.