Columbia subject headings:
Chaucer, Geoffrey, -1400--Language.
English language--Middle English, 1100-1500--Pronoun.
English language--Old English, ca. 450-1100--Pronoun.
Harvard subject headings:
Chaucer, Geoffrey, -1400
Chaucer, Geoffrey, -1400--Language.
English language--Middle English, 1100-1500--Pronoun.
English language--Old English, ca. 450-1100--Pronoun.
Princeton subject headings:
Chaucer, Geoffrey, -1400--Language.
English language--Middle English, 1100-1500--Pronoun.
English language--Old English, ca. 450-1100--Pronoun.