Cita APA (7a ed.)

Cook, P. J., & Ludwig, J. (1998). Defensive gun uses: New evidence from a National Survey. Journal of quantitative criminology, 14(2), 111-131.

Cita Chicago Style (17a ed.)

Cook, Philip J., y Jens Ludwig. "Defensive Gun Uses: New Evidence from a National Survey." Journal of Quantitative Criminology 14, no. 2 (1998): 111-131.

Cita MLA (8a ed.)

Cook, Philip J., y Jens Ludwig. "Defensive Gun Uses: New Evidence from a National Survey." Journal of Quantitative Criminology, vol. 14, no. 2, 1998, pp. 111-131.