Columbia subject headings:
Chrétien, de Troyes, active 12th century.
Harvard subject headings:
Arthurian romances--History and criticism.
ChreÌtien, de Troyes, active 12th century--Criticism and interpretation.
Chrétien, de Troyes, active 12th century.
Romances--History and criticism.
Princeton subject headings:
Chrétien, de Troyes, active 12th century.