Cita APA (7a ed.)

Cook, P. J., & Ludwig, J. (1996). Guns in America: Results of a comprehensive national survey on firearms ownership and use; summary report. Police Foundation.

Cita Chicago Style (17a ed.)

Cook, Philip J., y Jens Ludwig. Guns in America: Results of a Comprehensive National Survey on Firearms Ownership and Use; Summary Report. Washington, DC: Police Foundation, 1996.

Cita MLA (9a ed.)

Cook, Philip J., y Jens Ludwig. Guns in America: Results of a Comprehensive National Survey on Firearms Ownership and Use; Summary Report. Police Foundation, 1996.