Cook, P. J., & Ludwig, J. (1996). Guns in America: Results of a comprehensive national survey on firearms ownership and use; summary report. Police Foundation.
Chicago-Zitierstil (17. Ausg.)Cook, Philip J., und Jens Ludwig. Guns in America: Results of a Comprehensive National Survey on Firearms Ownership and Use; Summary Report. Washington, DC: Police Foundation, 1996.
MLA-Zitierstil (9. Ausg.)Cook, Philip J., und Jens Ludwig. Guns in America: Results of a Comprehensive National Survey on Firearms Ownership and Use; Summary Report. Police Foundation, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.