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Title: The Juvenile Justice Bulletin
URL: https://www.ncjrs.gov/html/ojjdp/193591/intro.html
Provides a detailed look at social disorganization theory, by which criminologists account for rates of crime in urban communities.

Title: Criminological Theory on the Web
URL: http://www.umsl.edu/~keelr/200/Diane_Demelo/diane.pdf
Provides a summary of Cohen's subculture of delinquency theory.