Columbia subject headings:
Antigone (Mythological character)--In literature--Congresses.
Literature, Modern--20th century--History and criticism--Congresses.
Harvard subject headings:
Antigone (Mythological character)--In literature--Congresses.
Literature, Modern--20th century
Sophocles--Influence--Congresses.
Princeton subject headings:
Antigone (Mythological character)--In literature.
Literature, Modern--20th century.
Sophocles--Influence--Congresses.