APA (7th ed.) Citation

Donohue, J. J., & Levitt, S. D. (2000). The impact of legalized abortion on crime. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Donohue, John J., and Steven D. Levitt. The Impact of Legalized Abortion on Crime. Cambridge: National Bureau of Economic Research, 2000.

MLA (9th ed.) Citation

Donohue, John J., and Steven D. Levitt. The Impact of Legalized Abortion on Crime. National Bureau of Economic Research, 2000.