Columbia subject headings:
Dialogue in literature.
German poetry--20th century--History and criticism.
German poetry--20th century--Themes, motives.
Intertextuality.
Harvard subject headings:
Dialogue in literature.
German poetry--20th century--History and criticism
Intertextuality.
Princeton subject headings:
Dialogue in literature.
German poetry--20th century--History and criticism.
Intertextuality.