APA (7th ed.) Citation

United States. Drug Enforcement Administration. (1994). Drug enforcement: 20th anniversary edition. U.S. Dept. of Justice, Drug Enforcement Administration.

Chicago Style (17th ed.) Citation

United States. Drug Enforcement Administration. Drug Enforcement: 20th Anniversary Edition. Washington, D.C.: U.S. Dept. of Justice, Drug Enforcement Administration, 1994.

MLA (9th ed.) Citation

United States. Drug Enforcement Administration. Drug Enforcement: 20th Anniversary Edition. U.S. Dept. of Justice, Drug Enforcement Administration, 1994.