ebrary, Inc, & Cooper, J. G. (2009). Youth gangs: Causes, violence and interventions. Nova Science Publishers.
Chicago-viite (17. p.)ebrary, Inc, ja John G. Cooper. Youth Gangs: Causes, Violence and Interventions. New York: Nova Science Publishers, 2009.
MLA-viite (9. p.)ebrary, Inc, ja John G. Cooper. Youth Gangs: Causes, Violence and Interventions. Nova Science Publishers, 2009.
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