Columbia subject headings:
Harvard subject headings:
Davis, Norman, 1913-1989
English language--Middle English, 1100-1500
English literature--Middle English, 1100-1500--History and criticism
Princeton subject headings:
Davis, Norman, 1913-1989.
English language--Middle English, 1100-1500.
English literature--Middle English, 1100-1500--History and criticism.