Operator's manual :
Army model OH-58C helicopter.
APA Citation
United States. Department of the Army. (1989). Operator's manual: Army model OH-58C helicopter. [Washington, D.C.]: Headquarters, Dept. of the Army.
MLA Citation
United States. Department of the Army. Operator's Manual: Army Model OH-58C Helicopter. [Washington, D.C.]: Headquarters, Dept. of the Army, 1989.
Warning: These citations may not always be complete (especially for serials).