Columbia subject headings:
Chaucer, Geoffrey, -1400--Language.
English language--Middle English, 1100-1500--Syntax.
Harvard subject headings:
Chaucer, Geoffrey, -1400--Language.
English language--Middle English, 1100-1500--Syntax
Princeton subject headings:
Chaucer, Geoffrey, -1400--Language.
English language--Middle English, 1100-1500--Syntax.