Walker, W. (1974). Alcohol highway-traffic safety workshop for law enforcement officials. U.S. Dept. of Transportation.
Chicago-Zitierstil (17. Ausg.)Walker, William. Alcohol Highway-traffic Safety Workshop for Law Enforcement Officials. Washington, D.C: U.S. Dept. of Transportation, 1974.
MLA-Zitierstil (9. Ausg.)Walker, William. Alcohol Highway-traffic Safety Workshop for Law Enforcement Officials. U.S. Dept. of Transportation, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.