Tohutoro APA (7th ed.)
ebrary, Inc, Krochalis, J., & Peters, E. (1982). The world of Piers Plowman. University of Pennsylvania Press.
Tohutoru Kātū Chicago (17th ed.)
ebrary, Inc, Jeanne Krochalis, me Edward Peters. The World of Piers Plowman. Philadelphia: University of Pennsylvania Press, 1982.
Tohutoro MLA (9th ed.)
ebrary, Inc, et al. The World of Piers Plowman. University of Pennsylvania Press, 1982.
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