Cita APA (7a ed.)

Barker, M. (1993). The prevention of street robbery Crime Prevention Unit series.

Cita Chicago Style (17a ed.)

Barker, Mary. "The Prevention of Street Robbery." Crime Prevention Unit Series 1993.

Cita MLA (9a ed.)

Barker, Mary. "The Prevention of Street Robbery." Crime Prevention Unit Series, 1993.