Langland, W., & Economou, G. (1996). William Langland's "Piers Plowman": The C Version. University of Pennsylvania Press.
Style de citation Chicago (17e éd.)Langland, William, et George Economou. William Langland's "Piers Plowman": The C Version. Philadelphia: University of Pennsylvania Press, 1996.
Style de citation MLA (8e éd.)Langland, William, et George Economou. William Langland's "Piers Plowman": The C Version. University of Pennsylvania Press, 1996.
Attention : ces citations peuvent ne pas être correctes à 100%.