References
- Faoleán, G. Ó. 2015. “The Ulster Defence Regiment and the Question of Catholic Recruitment, 1970–1972.” Terrorism and Political Violence 27 (5): 838–856. https://doi.org/10.1080/09546553.2013.865613.
- Potter, J. 1992. Testimony to Courage: The History of the Ulster Defence Regiment 1969-1992. London: Pen and Sword).
- Ryder, C. 1991. The Ulster Defence Regiment: An Instrument of Peace?. London: Methuen).