Spergel, I. A., & Chance, R. L. (1990). Community and institutional responses to the youth gang problem: Case studies based on field visits and other materials. National Youth Gang Information Center.
Chicago-Zitierstil (17. Ausg.)Spergel, Irving A., und Ron L. Chance. Community and Institutional Responses to the Youth Gang Problem: Case Studies Based on Field Visits and Other Materials. Arlington, Va: National Youth Gang Information Center, 1990.
MLA-Zitierstil (8. Ausg.)Spergel, Irving A., und Ron L. Chance. Community and Institutional Responses to the Youth Gang Problem: Case Studies Based on Field Visits and Other Materials. National Youth Gang Information Center, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.