National League of Cities. (1975). A workbook on standards and goals: The police. National League of Cities.
Chicago-Zitierstil (17. Ausg.)National League of Cities. A Workbook on Standards and Goals: The Police. Washington, D.C: National League of Cities, 1975.
MLA-Zitierstil (9. Ausg.)National League of Cities. A Workbook on Standards and Goals: The Police. National League of Cities, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.