APA (7th ed.) Citation

Ludwig, J., & Cook, P. J. (1999). The benefits of reducing gun violence: Evidence from contingent-valuation survey data. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Ludwig, Jens, and Philip J. Cook. The Benefits of Reducing Gun Violence: Evidence from Contingent-valuation Survey Data. Cambridge: National Bureau of Economic Research, 1999.

MLA (9th ed.) Citation

Ludwig, Jens, and Philip J. Cook. The Benefits of Reducing Gun Violence: Evidence from Contingent-valuation Survey Data. National Bureau of Economic Research, 1999.