National Council on Crime and Delinquency Research Center. (1980). Improving classification: A guide to evaluation. Research Center.
Chicago-Zitierstil (17. Ausg.)National Council on Crime and Delinquency Research Center. Improving Classification: A Guide to Evaluation. San Francisco, Cal: Research Center, 1980.
MLA-Zitierstil (9. Ausg.)National Council on Crime and Delinquency Research Center. Improving Classification: A Guide to Evaluation. Research Center, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.