Cita APA (7a ed.)

Bullock, K., & Tilley, N. (2002). Shootings, gangs and violent incidents in Manchester: Developing a crime reduction strategy Crime reduction research series paper.

Cita Chicago Style (17a ed.)

Bullock, Karen, y Nick Tilley. "Shootings, Gangs and Violent Incidents in Manchester: Developing a Crime Reduction Strategy." Crime Reduction Research Series Paper 2002.

Cita MLA (9a ed.)

Bullock, Karen, y Nick Tilley. "Shootings, Gangs and Violent Incidents in Manchester: Developing a Crime Reduction Strategy." Crime Reduction Research Series Paper, 2002.