Columbia subject headings:
Harvard subject headings:
Chaucer, Geoffrey, -1400--Criticism and interpretation.
Civilization, Medieval, in literature.
English literature--Middle English, 1100-1500--History and criticism
English literature--Scottish authors--History and criticism
Princeton subject headings:
Chaucer, Geoffrey, -1400--Criticism and interpretation.
English literature--Middle English, 1100-1500--History and criticism.
English literature--Scottish authors--To 1700--History and criticism.