ebrary, Inc, & Cooper, J. G. (2009). Youth gangs: Causes, violence and interventions. Nova Science Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc, और John G. Cooper. Youth Gangs: Causes, Violence and Interventions. New York: Nova Science Publishers, 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc, और John G. Cooper. Youth Gangs: Causes, Violence and Interventions. Nova Science Publishers, 2009.
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