APA (7th ed.) Citation

United States. Department of the Army. (1971). Operator's manual: Army model UH-1D/H helicopters. Headquarters, Dept. of the Army.

Chicago Style (17th ed.) Citation

United States. Department of the Army. Operator's Manual: Army Model UH-1D/H Helicopters. [Washington, D.C.]: Headquarters, Dept. of the Army, 1971.

MLA (9th ed.) Citation

United States. Department of the Army. Operator's Manual: Army Model UH-1D/H Helicopters. Headquarters, Dept. of the Army, 1971.