United States. Army. Air Corps. (1926). Comparison of tests on experimental 15-inch metal spars and 11-foot chord metal wing ribs: Parts 1 and 2 (Airplane Section report). U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Air Corps. Comparison of Tests on Experimental 15-inch Metal Spars and 11-foot Chord Metal Wing Ribs: Parts 1 and 2 (Airplane Section Report). Washington: U.S. GPO, 1926.
MLA (9th ed.) CitationUnited States. Army. Air Corps. Comparison of Tests on Experimental 15-inch Metal Spars and 11-foot Chord Metal Wing Ribs: Parts 1 and 2 (Airplane Section Report). U.S. GPO, 1926.
Warning: These citations may not always be 100% accurate.