National Council on Crime and Delinquency. (1981). Probation and parole directory (18th ed.). National Council on Crime and Delinquency.
Chicago-Zitierstil (17. Ausg.)National Council on Crime and Delinquency. Probation and Parole Directory. 18th ed. Hackensack, N.J: National Council on Crime and Delinquency, 1981.
MLA-Zitierstil (9. Ausg.)National Council on Crime and Delinquency. Probation and Parole Directory. 18th ed. National Council on Crime and Delinquency, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.