Brian E. Barton, The Government of Northern Ireland, 1920–1923 (Athol Books, 1980)
Paul Bew, Peter Gibbon and Henry Patterson The State in Northern Ireland, 1921–72: Political Forces and Social Classes, Manchester (Manchester University Press, 1979)
Osborne Morton, Marine Algae of Northern Ireland (Ulster Museum, Belfast, 1994), ISBN 0-900761-28-8
Henry Patterson, Ireland Since 1939: The Persistence of Conflict (Penguin, 2006), ISBN 978-1-84488-104-8
P. Hackney (ed.) Stewart's and Corry's Flora of the North-east of Ireland 3rd edn. (Institute of Irish Studies, Queen's University of Belfast, 1992), ISBN 0-85389-446-9(HB)
