1. Dolan, Edwin G. 1971, September–October. Alienation, Freedom, and Economic Organization. The Journal of Political Economy 79(5): 1084–1094.
2. Snyder, Christopher. 2000. The World of King Arthur. London: Thames & Hudson.
3. Twain, Mark. 1982. A Connecticut Yankee in King Arthur’s Court, Norton Critical Edition, ed. Allison R. Ensor. New York: W. W. Norton & Co.
4. Wilhelm, James J. (ed). 1994. The Romance of Arthur: An Anthology of Medieval Texts in Translation, Exp. edn. New York: Garland Publishing.