APA (7th ed.) Citation

United States. Army. Air Corps. (1921). Supplementary report on experimental reinforced plywood truss ribs. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Supplementary Report on Experimental Reinforced Plywood Truss Ribs. Washington: U.S. GPO, 1921.

MLA (9th ed.) Citation

United States. Army. Air Corps. Supplementary Report on Experimental Reinforced Plywood Truss Ribs. U.S. GPO, 1921.

Warning: These citations may not always be 100% accurate.