APA (7th ed.) Citation

Chalfin, A., & McCrary, J. (2013). The Effect of Police on Crime: New Evidence from U.S. Cities, 1960-2010. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Chalfin, Aaron, and Justin McCrary. The Effect of Police on Crime: New Evidence from U.S. Cities, 1960-2010. National Bureau of Economic Research, 2013.

MLA (9th ed.) Citation

Chalfin, Aaron, and Justin McCrary. The Effect of Police on Crime: New Evidence from U.S. Cities, 1960-2010. National Bureau of Economic Research, 2013.

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