APA (7th ed.) Citation

Duggan, M. (2000). More guns, more crime. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Duggan, Mark. More Guns, More Crime. Cambridge: National Bureau of Economic Research, 2000.

MLA (9th ed.) Citation

Duggan, Mark. More Guns, More Crime. National Bureau of Economic Research, 2000.

Warning: These citations may not always be 100% accurate.