Cita APA (7a ed.)

Perkins, D. D., Wandersman, A., & Rich, R. C. (1993). The physical environment of street crime: Defensible space, territoriality and incivilities. Journal of environmental psychology, 13, 29-49.

Cita Chicago Style (17a ed.)

Perkins, Douglas D., Abraham Wandersman, y Richard C. Rich. "The Physical Environment of Street Crime: Defensible Space, Territoriality and Incivilities." Journal of Environmental Psychology 13 (1993): 29-49.

Cita MLA (8a ed.)

Perkins, Douglas D., et al. "The Physical Environment of Street Crime: Defensible Space, Territoriality and Incivilities." Journal of Environmental Psychology, vol. 13, 1993, pp. 29-49.