Columbia subject headings:
Pirandello, Luigi, 1867-1936--Criticism and interpretation--Congresses.
Pirandello, Luigi, 1867-1936--Literary style--Congresses.
Harvard subject headings:
Pirandello, Luigi, 1867-1936--Criticism and interpretation--Congresses.
Pirandello, Luigi, 1867-1936--Literary style--Congresses.
Princeton subject headings:
Pirandello, Luigi, 1867-1936--Criticism and interpretation--Congresses.
Pirandello, Luigi, 1867-1936--Language--Congresses.