Cita APA (7a ed.)

Duggan, M. G. (2001). More Guns, More Crime. Journal of political economy. doi:10.1086/322833

Cita Chicago Style (17a ed.)

Duggan, Mark G. "More Guns, More Crime." Journal of Political Economy 2001. https://doi.org/10.1086/322833.

Cita MLA (9a ed.)

Duggan, Mark G. "More Guns, More Crime." Journal of Political Economy, 2001, https://doi.org/10.1086/322833.