APA (7th ed.) Zitazioa
Barney, S. A. (2006). The Penn commentary on Piers Plowman. University of Pennsylvania Press.
Chicago Style (17th ed.) Zitazioa
Barney, Stephen A. The Penn Commentary on Piers Plowman. Philadelphia, Pa.: University of Pennsylvania Press, 2006.
MLA (9th ed.) Zitazioa
Barney, Stephen A. The Penn Commentary on Piers Plowman. University of Pennsylvania Press, 2006.
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