Appendix Martin, Jay. “Wil as Fool and Wanderer in Piers Plowman.” Texas Studies in Literature and Language 3 (1962): 535–48.
“The Subject of Piers Plowman.” Yearbook of Langland Studies 1 (1987): 1–30.
“Version of Piers Plowman.” Yearbook of Langland Studies 20 (2006): 141–89. _____. “William langland.” in The Oxford History of Literary Translation in English, vol. 1: To 1550, ed. roger ellis, 149–59. Oxford: Oxford University Press, 2008.
Mary Carruthers, The Search for St. Truth: A Study of Meaning in Piers Plowman (Evanstan, 111.: Northwestern UP, 1973)
John Lawlor, “The Imaginative Unity of Piers Plowman ” R E S, ns 8 (1957) 113-26
Robert Worth Frank, Jr., Piers Plowman and the Scheme of Salvation: An Interpretation of Dowel, Dobet, and Dobest, Yale Studies in English 136 (New Haven: Yale UP, 1957.)
