Kenneth D. Kochanek, Jiaquan Xu, Sherry L. Murphy, Arialdi M. Minino, and Hsiang-Ching Kung. “Deaths: Final Data for 2009.” National Vital Statistics Reports. Dec. 19, 2011.
Christpher S. Koper. “Crime Gun Risk Factors: Buyer, Seller, Firearm, and Transaction Characteristics Associated with Gun Trafficking and Criminal Gun Use.” Jerry Lee Center of Criminology, University of Pennsylvania. 2007.
Caroline Wolf Harlow. “Firearm Use by Offenders.” U.S. Bureau of Justice Statistics. November 2001.
Sam Stein. “Gun Owners Surveyed By Frank Luntz Express Broad Support For Gun Control Policies.” The Huffington Post. Jul. 24, 2012.
Ezra Klein. “Twelve Facts About Guns and Mass Shootings in the United States.” The Washington Post. Dec. 14, 2012.
Erin G. Richardson and David Hemenway. “Homicide, Suicide, and Unintentional Firearm Fatality: Comparing the United States With Other High Income Countries, 2003.” The Journal of Trauma, Injury, Infection and Critical Care. January 2011.