Columbia subject headings:
English language--Middle English, 1100-1500.
English literature--Middle English, 1100-1500--History and criticism.
English poetry--Middle English, 1100-1500--Bibliography.
English poetry--Scottish authors--Bibliography.
Harvard subject headings:
English language--Middle English, 1100-1500
English literature--Middle English, 1100-1500--History and criticism
English poetry--Middle English, 1100-1500--Bibliography
English poetry--Scottish authors--Bibliography.
Scottish poetry--To 1700--Bibliography.
Princeton subject headings:
English language--Middle English, 1100-1500.
English literature--Middle English, 1100-1500--History and criticism.
English poetry--Middle English, 1100-1500--Bibliography.
English poetry--Scottish authors--Bibliography.
Scottish poetry--To 1700--Bibliography.