Cita APA (7a ed.)

Cook, P. J. (1978). The effect of gun availability on robbery and robbery murder: A cross-section study of 50 cities. Duke Univ., Center for the Study of Justice Policy.

Cita Chicago Style (17a ed.)

Cook, Philip J. The Effect of Gun Availability on Robbery and Robbery Murder: A Cross-section Study of 50 Cities. [Durham]: Duke Univ., Center for the Study of Justice Policy, 1978.

Cita MLA (8a ed.)

Cook, Philip J. The Effect of Gun Availability on Robbery and Robbery Murder: A Cross-section Study of 50 Cities. Duke Univ., Center for the Study of Justice Policy, 1978.