Columbia subject headings:
English language--History.
English literature--Middle English, 1100-1500--History and criticism.
Great Britain--History--14th century.
Harvard subject headings:
English language--History
English literature--Middle English, 1100-1500--History and criticism
Great Britain--History--14th century.
Great Britain--History--Richard II, 1377-1399.
Princeton subject headings:
English language--History.
English literature--Middle English, 1100-1500--History and criticism.
Great Britain--History--14th century.