United States. Army. Air Corps. (1920). Methods in observation practiced with 5th Corps, 1st American Army, on fronts: St. Mihiel sector, Sept. 12 to 16, 1918; Argonne-Meuse sector, Sept. 12 to Nov. 11, 1918. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Air Corps. Methods in Observation Practiced with 5th Corps, 1st American Army, on Fronts: St. Mihiel Sector, Sept. 12 to 16, 1918; Argonne-Meuse Sector, Sept. 12 to Nov. 11, 1918. Washington: U.S. GPO, 1920.
MLA (9th ed.) CitationUnited States. Army. Air Corps. Methods in Observation Practiced with 5th Corps, 1st American Army, on Fronts: St. Mihiel Sector, Sept. 12 to 16, 1918; Argonne-Meuse Sector, Sept. 12 to Nov. 11, 1918. U.S. GPO, 1920.
Warning: These citations may not always be 100% accurate.