Four Arthurian Romances

Carroll, Carleton W. (Ed.): Chrétien DeTroyes: Erec and Enide (Garland Library of Medieval Literature, New York & London, 1987). Edited with a translation (see Penguin Classics edition below).
Kibler, William W. (Ed.): Chrétien DeTroyes: The Knight with the Lion, or Yvain (Garland Library of Medieval Literature 48A, New York & London, 1985). Original text with English translation (See Penguin Classics edition below).
Kibler, William W. (Ed.): Chrétien DeTroyes: Lancelot, or The Knight of the Cart (Garland Library of Medieval Literature 1A, New York & London, 1981). Original text with English translation (See Penguin Classics edition below).
Micha, Alexandre (Ed.): Les Romans de Chrétien de Troyes, Vol. II: Cligés (Champion, Paris, 1957).
OTHER TRANSLATIONS—
Cline, Ruth Harwood (Trans.): Chrétien DeTroyes: Yvain, or the Knight with the Lion (University of Georgia Press, Athens GA, 1975).
Kibler, William W. & Carleton W. Carroll (Trans.): Chrétien DeTroyes: Arthurian Romances (Penguin Classics, London, 1991). Contains translations of Erec et Enide (by Carroll), Cligés , Yvain , Lancelot , and DeTroyes' incomplete Perceval (by Kibler). Highly recommended.
Owen, D.D.R (Trans.): Chrétien DeTroyes: Arthurian Romances (Everyman Library, London, 1987). Contains translations of Erec et Enide , Cligés , Yvain , Lancelot , and DeTroyes' incomplete Perceval . NOTE: This edition replaced W.W. Comfort's in the Everyman Library catalogue. Highly recommended.
RECOMMENDED READING—
Anonymous: Lancelot of the Lake (Trans: Corin Corely; Oxford University Press, Oxford, 1989). English translation of one of the earliest prose romances concerning Lancelot.
Anonymous: The Mabinogion (Ed: Jeffrey Gantz; Penguin Classics, London, 1976). Contains a translation of Geraint and Enid , an earlier Welsh version of Erec et Enide .
Anonymous: Yvain and Gawain , Sir Percyvell of Gales , and The Anturs of Arther (Ed: Maldwyn Mills; Everyman, London, 1992). NOTE: Texts are in Middle-English; Yvain and Gawain is a Middle-English work based almost exclusively on Chrétien DeTroyes' Yvain .