APA (7th ed.) Citation

Chrétien de Troyes, s. X., Duggan, J. J., & Raffel, B. (1999). Perceval: The story of the Grail. Yale University Press.

Chicago Style (17th ed.) Citation

Chrétien de Troyes, s. XII, Joseph J. Duggan, and Burton Raffel. Perceval: The Story of the Grail. New Haven ; London: Yale University Press, 1999.

MLA (9th ed.) Citation

Chrétien de Troyes, s. XII, et al. Perceval: The Story of the Grail. Yale University Press, 1999.