Columbia subject headings:
Chaucer, Geoffrey, -1400--Language.
Chaucer, Geoffrey, -1400--Literary style.
English language--Middle English, 1100-1500--Grammar.
English language--Middle English, 1100-1500--Style.
Harvard subject headings:
Chaucer, Geoffrey, -1400--Language.
Chaucer, Geoffrey, -1400--Literary style.
English language--Middle English, 1100-1500--Grammar
English language--Middle English, 1100-1500--Style
Rhetoric, Medieval.
Princeton subject headings:
Chaucer, Geoffrey, -1400--Language.
Chaucer, Geoffrey, -1400--Style.
English language--Middle English, 1100-1500--Grammar.
English language--Middle English, 1100-1500--Style.