Cita APA (7a ed.)

Perr, J. D., & Simpson, M. E. (1987). Violent crimes in city environmental determinants. Environment and behavior, 19(1), 77-90.

Cita Chicago Style (17a ed.)

Perr, Josephus Daniel, y Miles E. Simpson. "Violent Crimes in City Environmental Determinants." Environment and Behavior 19, no. 1 (1987): 77-90.

Cita MLA (9a ed.)

Perr, Josephus Daniel, y Miles E. Simpson. "Violent Crimes in City Environmental Determinants." Environment and Behavior, vol. 19, no. 1, 1987, pp. 77-90.