Cita APA (7a ed.)

Cook, P. J., & Ludwig, J. (2000). Gun violence: The real costs. Oxford University Press.

Cita Chicago Style (17a ed.)

Cook, Philip J., y Jens Ludwig. Gun Violence: The Real Costs. Oxford ; New York: Oxford University Press, 2000.

Cita MLA (8a ed.)

Cook, Philip J., y Jens Ludwig. Gun Violence: The Real Costs. Oxford University Press, 2000.