Lua APA (7ú heag.)
Barney, S. A. (2006). The Penn commentary on Piers Plowman. University of Pennsylvania Press.
Lua i Stíl Chicago (17ú heag.)
Barney, Stephen A. The Penn Commentary on Piers Plowman. Philadelphia, Pa.: University of Pennsylvania Press, 2006.
Lua MLA (9ú heag.)
Barney, Stephen A. The Penn Commentary on Piers Plowman. University of Pennsylvania Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.