1. Crewe, B., Hulley, S. and Wright, S. (2019) Life Imprisonment from Young Adulthood: Adaption, Identity and Time, London: Palgrave Macmillan.
2. DiIulio, J.J. Jnr. (1987) Governing Prisons: A Comparative Study of Correctional Management, New York and London: Macmillan Inc.
3. Easton, S. and Piper, C. (2016) Sentencing and Punishment: The Quest for Justice, [Fourth Edition], Oxford University Press.
4. Easton, S. and Piper, C. (2019) ‘Outsourcing Punishment: A Poisoned Chalice?’, International Journal of Law, Crime and Justice, vol. 58: 69-79.
5. Enteman, W.F. (1993) Managerialism: The Emergence of a New Ideology, Madison, Wisconsin: University of Wisconsin Press.