Cita APA (7a ed.)

Peters, E. H., & Krochalis, J. (1975). The World of "Piers Plowman". University of Pennsylvania Press.

Cita Chicago Style (17a ed.)

Peters, Edward H., y Jeanne Krochalis. The World of "Piers Plowman". [Philadelphia]: University of Pennsylvania Press, 1975.

Cita MLA (8a ed.)

Peters, Edward H., y Jeanne Krochalis. The World of "Piers Plowman". University of Pennsylvania Press, 1975.