References
- Farrell , M. 1983 . Arming the Protestants , London : Pluto .
- Gibbon , P. 1975 . The origins of Ulster Unionism , Manchester : Manchester University Press .
- Gibbon , P. , Bew , P. and Patterson , H. 1979 . Northern Ireland 1921–72: Political forces and social classes , Manchester : Manchester University Press .
- McGarry , J. and O'Leary , B. 1995 . Explaining Northern Ireland , Oxford : Blackwell .