Cita APA (7a ed.)

Walker, C., & McGuinness, M. (2002). Commercial risk, political violence and policing the City of London. Crime and insecurity, 234-259.

Cita Chicago Style (17a ed.)

Walker, Clive, y Martina McGuinness. "Commercial Risk, Political Violence and Policing the City of London." Crime and Insecurity 2002: 234-259.

Cita MLA (8a ed.)

Walker, Clive, y Martina McGuinness. "Commercial Risk, Political Violence and Policing the City of London." Crime and Insecurity, 2002, pp. 234-259.