APA (7th ed.) Citation

Combat Studies Institute (U.S.). (1985). Larger units: Theater army, army group, field army. Combat Studies Institute.

Chicago Style (17th ed.) Citation

Combat Studies Institute (U.S.). Larger Units: Theater Army, Army Group, Field Army. [Fort Leavenworth, Kan.]: Combat Studies Institute, 1985.

MLA (9th ed.) Citation

Combat Studies Institute (U.S.). Larger Units: Theater Army, Army Group, Field Army. Combat Studies Institute, 1985.