1. Bruce S. The Edge of the Union. The Ulster Loyalist Political Vision. New York: Oxford University Press Inc; 1994.
2. Potter J. A testimony to courage: the history of the Ulster Defence Regiment 1969–1992. Barnsley: Lee Cooper; 2001.
3. Armour C, Walker E, Waterhouse-Bradley B, Hall M, Ross J. Current and Future Needs of Veterans in Northern Ireland [Internet]. Coleraine: Psychology Research Institute, Faculty of Life and Health Sciences, University of Ulster; 2017. http://www.niveteranstudy.org/current-future-needs/
4. Armour C, Walker E, Matthew D, Dr H, Waterhouse-Bradley B, Ross J et al. Exploring the Need for a Veterans’ Centre in Northern Ireland. Psychology Research Institute, Faculty of Life and Health Sciences, University of Ulster; 2018. http://www.niveteranstudy.org/northern-ireland-veterans-study/
5. Armour C, McGlinchey E, Ross J. The health and wellbeing of armed forces veterans in northern Ireland: the results of a cross-sectional psychological wellbeing survey. Belfast: Queens University; 2021. pp. 1–90. https://nivso.org.uk/storage/352/20210422-NIVHWS-MHWB-Survey-Report-FINAL.pdf