Columbia subject headings:
Mahon, Derek, 1941-2020--Criticism and interpretation.
Harvard subject headings:
Mahon, Derek, 1941-2020--Criticism and interpretation--Congresses.
Mahon, Derek, 1941-2020--Criticism and interpretation.
Northern Ireland--In literature--Congresses.
Princeton subject headings:
Mahon, Derek, 1941---Criticism and interpretation.