Cita APA (7a ed.)

Wagner, H. (1931). Flat sheet metal girder with very thin metal web: Part 3 : Sheet metal girders with spars resistant to bending - the stress in uprights - diagonal tension fields. National Advisory Committee for Aeronautics.

Cita Chicago Style (17a ed.)

Wagner, Herbert. Flat Sheet Metal Girder with Very Thin Metal Web: Part 3 : Sheet Metal Girders with Spars Resistant to Bending - the Stress in Uprights - Diagonal Tension Fields. Washington, D.C.: National Advisory Committee for Aeronautics, 1931.

Cita MLA (8a ed.)

Wagner, Herbert. Flat Sheet Metal Girder with Very Thin Metal Web: Part 3 : Sheet Metal Girders with Spars Resistant to Bending - the Stress in Uprights - Diagonal Tension Fields. National Advisory Committee for Aeronautics, 1931.