1. Gollancz, Israel (1940). Sir Gawain and the Green Knight, Oxford University Press.
2. Bevington, David (2012). Medieval Drama, Hackett Publishing Company, Inc.
3. Bernstein, Alan E. (1996). The Formation of Hell: Death and Retribution in the Ancient and Early Christian Worlds, Cornell University Press.
4. Raffan, John (1985). Greek Religion: Archaic and Classical, Oxford University Press.
5. The Green Chapel: Its Meaning and Its Function;Carson;Studies in Philology,1963