APA (7th ed.) Citation

Levitt, S. D. (2004). Understanding why crime fell in the 1990s: Four factors that explain the decline and six that do not. The journal of economic perspectives, 18(1), 163-190. doi:10.1257/089533004773563485

Chicago Style (17th ed.) Citation

Levitt, Steven D. "Understanding Why Crime Fell in the 1990s: Four Factors That Explain the Decline and Six That Do Not." The Journal of Economic Perspectives 18, no. 1 (2004): 163-190. https://doi.org/10.1257/089533004773563485.

MLA (9th ed.) Citation

Levitt, Steven D. "Understanding Why Crime Fell in the 1990s: Four Factors That Explain the Decline and Six That Do Not." The Journal of Economic Perspectives, vol. 18, no. 1, 2004, pp. 163-190, https://doi.org/10.1257/089533004773563485.