Cita APA (7a ed.)

Klepper, S., & Nagin, D. (1989). The deterrent effect of perceived certainty and severity of punishment revisited. Criminology, 27(4), 721-746.

Cita Chicago Style (17a ed.)

Klepper, Steven, y Daniel Nagin. "The Deterrent Effect of Perceived Certainty and Severity of Punishment Revisited." Criminology 27, no. 4 (1989): 721-746.

Cita MLA (9a ed.)

Klepper, Steven, y Daniel Nagin. "The Deterrent Effect of Perceived Certainty and Severity of Punishment Revisited." Criminology, vol. 27, no. 4, 1989, pp. 721-746.