APA (7th ed.) Citation

United States. Drug Enforcement Administration. (1989). Colt M16 rifle: Operation and field maintenance handbook. U.S. Dept. of Justice, Drug Enforcement Administration.

Chicago Style (17th ed.) Citation

United States. Drug Enforcement Administration. Colt M16 Rifle: Operation and Field Maintenance Handbook. [Washington, D.C.?]: U.S. Dept. of Justice, Drug Enforcement Administration, 1989.

MLA (9th ed.) Citation

United States. Drug Enforcement Administration. Colt M16 Rifle: Operation and Field Maintenance Handbook. U.S. Dept. of Justice, Drug Enforcement Administration, 1989.