* _Født i oktober_ (1958)
* _The Reinhaert Sequence_ (1971)
* _The Prince of Morning Bells_ (1981)
* _Paladsporten_ (1987)
Faglitteratur:
* _En bibliografi over moderne anglo-irsk litteratur:bind 1800-1970_ (1972)
* _A Guide to the Irish in Britain_ (1981)
* _Irland and Northern Ireland:A Chronology of events 1968-1980_ (1981)
* _Irland:A Bibliography of Anglo-Irish Literature and History_ (1988)
* _Belfast:A Bibliography of Books, Pamphlets, Articles and Reports Relating to Belfast_ (1989)
* _Northern Ireland:A Bibliography of Books, Pamphlets, Articles and Reports Relating to Northern Ireland_ (1990)
* _The War in Ireland:A Bibliography of Books, Pamphlets, Articles and Reports Relating to Northern Ireland_ (1991)
* _James Joyce and Anglo-Irish Literature:A Bibliography of Criticism_ (1992)
* _The Troubles in Northern Ireland:A Bibliography of Books, Pamphlets, Articles and Reports_ (1994)
* _The History of Ireland:A Bibliography of Books, Pamphlets, Articles and Reports_ (1996)
* _Protestantisk nordirsk litteratur:En bibliografi over bøger, pjecer, artikler og rapporter_ (1998)
* _The Northern Ireland Question:A Bibliography of Books, Pamphlets, Articles and Reports_ (2000)