1. Awcock, H. (2014). On This Day: Bloody Sunday, 13 November 1887. Turbulentlondon.com [Online]. https://turbulentlondon.com/2014/11/13/on-this-day-bloody-sunday-13th-november-1887/. Accessed 27 Jan 2022.
2. Bowden, T. (1974). “Ireland Decay of Control” and “Ireland: the Impact of Terror”. In M. Elliott-Bateman, J. Ellis, and T. Bowden (Eds.), Revolt to Revolution. Manchester University Press.
3. Bowden, T. (1978). Beyond the Limits of the Law. Penguin Books.
4. Brodeur, J.-P. (1983). High Policing and Low Policing: Remarks About the Policing of Political Activities. Social Problems, 30(5), 507–520.
5. Bunyan, T. (1977). The History and Practice of the Political Police in Britain. Quartet Books.