Cita APA (7a ed.)
ebrary, Inc, Krochalis, J., & Peters, E. (1982). The world of Piers Plowman. University of Pennsylvania Press.
Cita Chicago Style (17a ed.)
ebrary, Inc, Jeanne Krochalis, y Edward Peters. The World of Piers Plowman. Philadelphia: University of Pennsylvania Press, 1982.
Cita MLA (9a ed.)
ebrary, Inc, et al. The World of Piers Plowman. University of Pennsylvania Press, 1982.
Precaución: Estas citas no son 100% exactas.