1. Centers for Disease Control and Prevention. WISQARS Non-fatal Injury Reports. 2004. http://cdc.gov/ncipc/wisqars/ . Accessed on October 5, 2007.
2. Zernike K. Violent crime in cities shows sharp surge. New York Times. March 8, 2007. http://wwwnytimes.com/2007/03/09/us/09crime.html . Accessed on October 12, 2007.
3. Reiss AJ, Roth JA, eds. Understanding and preventing violence. Panel on the Understanding and Control of Violent Behavior, Committee on Law and Justice, Commission on Behavioral and Social Sciences and Education, National Research Council. Washington, DC: National Academies; 1993.
4. Sampson RJ, Wilson WJ. Race, crime, and urban inequality. In: Hagan J, Peterson RD, eds. Crime and Inequality. Stanford, CA: Stanford University Press; 1995:37–54.
5. Wilson WJ. The Truly Disadvantaged: The Inner City, the Underclass, and Public Policy. Chicago, IL: University of Chicago Press; 1987.