| Catholicism in a Protestant kingdom : a study of the Irish 'ancien regime' | Leighton, C. D. A. | Monograph or Collective Volume | Macmillan | 1994 |
| Gallicanism and the veto controversy : church, state and Catholic community in early nineteenth-century Ireland | Leighton, C. D. A. | Article in Book | | 1990 |
| The enlightened religion of Robert Clayton | Leighton, C. D. A. | Article in Journal | | 1995 |
| The Irish manufacture movement, 1840-1843 | Leighton, C. D. A. | Monograph or Collective Volume | St Patrick's College, Department of Modern History | 1987 |
| The Non-Jurors and their History | Leighton, C. D. A. | Article in Journal | | 2005 |