Wagner, H. (1931). Flat sheet metal girder with very thin metal web: Part 2 : Sheet metal girders with spars resistant to bending - oblique uprights - stiffness. National Advisory Committee for Aeronautics.
Chicago Style (17th ed.) CitationWagner, Herbert. Flat Sheet Metal Girder with Very Thin Metal Web: Part 2 : Sheet Metal Girders with Spars Resistant to Bending - Oblique Uprights - Stiffness. Washington, D.C.: National Advisory Committee for Aeronautics, 1931.
MLA (9th ed.) CitationWagner, Herbert. Flat Sheet Metal Girder with Very Thin Metal Web: Part 2 : Sheet Metal Girders with Spars Resistant to Bending - Oblique Uprights - Stiffness. National Advisory Committee for Aeronautics, 1931.
Warning: These citations may not always be 100% accurate.