Cita APA (7a ed.)

Langland, W., & Economou, G. (1996). William Langland's "Piers Plowman": The C Version. University of Pennsylvania Press.

Cita Chicago Style (17a ed.)

Langland, William, y George Economou. William Langland's "Piers Plowman": The C Version. Philadelphia: University of Pennsylvania Press, 1996.

Cita MLA (8a ed.)

Langland, William, y George Economou. William Langland's "Piers Plowman": The C Version. University of Pennsylvania Press, 1996.