United States. Army. Air Corps. (1921). Investigation of effect of ratio of diameter to gage thickness upon torsional strength of steel tubing. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Air Corps. Investigation of Effect of Ratio of Diameter to Gage Thickness upon Torsional Strength of Steel Tubing. Washington: U.S. GPO, 1921.
MLA (9th ed.) CitationUnited States. Army. Air Corps. Investigation of Effect of Ratio of Diameter to Gage Thickness upon Torsional Strength of Steel Tubing. U.S. GPO, 1921.
Warning: These citations may not always be 100% accurate.