1.
Langland, W., Robertson, E. A., Shepherd, S. H. A. & Donaldson, E. T. Prologue (lines 1-99). in Piers Plowman: the Donaldson translation, select authoritative Middle English text, sources and backgrounds, criticism 2–6 (W.W. Norton, 2006).
2.
Hoccleve, T. La Male regle. in ‘My compleinte’ and other poems 64–78 (University of Exeter Press, 2001).
3.
Langland, W. The Pardon Sent from Truth’, lines 1-280. in Piers Plowman 171–182 (University of Exeter Press, 2008).
4.
Dobson, R. The Rebels in London according to Henry Knighton. in The Peasants’ Revolt of 1381 181–187 (Macmillan, 1983).
5.
Walsh, P. Book 1. in The consolation of philosophy 3–18 (Clarendon Press, 1999).
6.
Baker, D. Showings : authoritative text, contexts, criticism. in Showings 70–82 (W.W. Norton, 2005).
7.
Preste, Ne Monke, Ne Yit Chanoun | Robbins Library Digital Projects. http://d.lib.rochester.edu/teams/text/dean-medieval-english-political-writings-preste-ne-monke-ne-yit-chanoun.
8.
Hudson, A. Epistola Sathanae ad Cleros. in Selections from English Wycliffite writings 89–93 (Cambridge University Press, 1978).
9.
Richard the Redeless and Mum and the Sothsegger | Robbins Library Digital Projects. http://d.lib.rochester.edu/teams/publication/dean-richard-the-redeless-and-mum-and-the-sothsegger.
10.
Calabrese, M. A., Pugh, T. & Palmer, R. B. An introduction to Piers Plowman. (University Press of Florida, 2016).
11.
The Cambridge companion to Piers Plowman. (Cambridge University Press, 2014).
12.
The Cambridge companion to medieval English literature, 1100-1500. (Cambridge University Press, 2009).
13.
Simpson, J. Piers Plowman: an introduction to the B-text. (Longman, 1990).
14.
Simpson, J. Piers Plowman: an introduction. (University of Exeter Press, 2007).
15.
Langland, W. & Schmidt, A. V. C. Piers Plowman: a parallel-text edition of the A, B, C and Z versions, Vol.1: Text. (Longman, 1995).
16.
Langland, W. & Schmidt, A. V. C. Piers Plowman: a parallel-text edition of the A, B, C and Z versions. (Longman, 1995).
17.
ROBERT ADAMS. THE NATURE OF NEED IN ‘PIERS PLOWMAN’ XX. Traditio 34, 273–301 (1978).
18.
Adams, R. Langland and the Rokele family: the gentry background to Piers Plowman. (Four Courts Press, 2013).
19.
Aers, D. Chaucer, Langland, and the creative imagination. (Routledge & Kegan Paul, 1980).
20.
Aers, D. Community, gender, and individual identity: English writing, 1360-1430. (Routledge, 1988).
21.
Aers, D. Piers Plowman and Christian allegory. (Edward Arnold, 1975).
22.
Alford, J. A. A Companion to Piers Plowman. (University of California Press, 1988).
23.
Baldwin, A. P. The theme of government in Piers Plowman. vol. 1 (Brewer, 1981).
24.
Barney, S. A. The Penn commentary on Piers Plowman: Volume 5: C Passūs 20-22 ; B Passūs 18-20. (University of Pennsylvania Press, 2006).
25.
Barr, H. Signes and sothe: language in the Piers Plowman tradition. vol. 10 (D.S. Brewer, 1994).
26.
Burrow, J. A. Ricardian poetry: Chaucer, Gower, Langland and the ‘Gawain’ poet. (Routledge & Kegan Paul, 1971).
27.
Medieval English Political Writings | Robbins Library Digital Projects. http://d.lib.rochester.edu/teams/publication/dean-medieval-english-political-writings.
28.
Donaldson, E. T. Piers plowman: the C-text and its poet. vol. v. 113 (Archon Books, 1966).
29.
Galloway, A. The Penn commentary on Piers Plowman: Volume 1: C Prologue-Passus 4 ; B Prologue-Passus 4 ; A Prologue-Passus 4. (University of Pennsylvania Press, 2006).
30.
Griffiths, L. Personification in Piers Plowman. vol. 3 (Brewer, 1985).
31.
Hanna, R. William Langland. (Variorum, 1993).
32.
Hanna, R. London literature, 1300-1380. vol. 57 (Cambridge University Press, 2005).
33.
Hanna, R. The Penn commentary on Piers Plowman: Volume 2: C passus 5-9, B passus 5-7, A passus 5-8. (University of Pennsylvania Press, 2017).
34.
R. Carter Hailey. ‘Geuyng light to the reader’: Robert Crowley’s Editions of ‘Piers Plowman’ (1550). The Papers of the Bibliographical Society of 95, 483–502 (2001).
35.
Hudson, A. Langland and Lollardy. Yearbook of Langland studies 17, 93–105.
36.
Hoccleve, Thomas, 1370?-1450? ‘My compleinte’ and other poems. (University of Exeter Press, 2001).
37.
Hudson, A. The premature Reformation: Wycliffite texts and Lollard history. (Clarendon Press, 1988).
38.
Hudson, A. Selections from English Wycliffite writings. (Cambridge University Press, 1978).
39.
Hussey, S. S. Piers Plowman: critical approaches. (Methuen, 1969).
40.
Nicolas Jacobs. The Typology of Debate and the Interpretation of Wynnere and Wastoure. The Review of English Studies 36, 481–500 (1985).
41.
Baker, D. N. & Julian. Showings. (W.W. Norton, 2005).
42.
Justice, S. Writing and rebellion: England in 1381. vol. 27 (University of California Press, 1994).
43.
Justice, Steven. The Genres of ‘Piers Plowman’. Viator 19, 1–29.
44.
Kelen, S. A. Langland’s early modern identities. (Palgrave Macmillan, 2007).
45.
Justice, S. & Kerby-Fulton, K. Written work: Langland, labor, and authorship. (University of Pennsylvania Press, 1997).
46.
King, J. N. English Reformation literature: the Tudor origins of the Protestant  tradition. (Princeton University Press, 1982).
47.
Kirk, E. D. The dream thought of ‘Piers Plowman’. vol. 178 (Yale University Press, 1972).
48.
Galloway, A., Hanna, R. & Barney, S. A. The Penn commentary on Piers Plowman. (University of Pennsylvania Press).
49.
Lawton, D. The Subject of Piers Plowman. Yearbook of Langland studies 1, 1–30 (1987).
50.
Bloomfield, M. W., Benson, L. D., Wenzel, S., & Western Michigan University. Medieval Institute. The Wisdom of poetry: essays in early English literature in honor of Morton W. Bloomfield. (Medieval Institute Publications, Western Michigan University, 1982).
51.
Middleton, A. Two Infinites: Grammatical Metaphor in Piers Plowman. ELH 39, (1972).
52.
Middleton, A. Chaucer, Langland, and Fourteenth-Century Literary History. vol. CS1022 (Ashgate Variorum, 2013).
53.
Kane, G., Kennedy, E. D., Waldron, R. & Wittig, J. S. Medieval English studies presented to George Kane. (D.S. Brewer, 1988).
54.
Salter, E. Piers Plowman: an introduction. (Blackwell, 1962).
55.
Archiv für das Studium der neueren Sprachen und Literaturen. (1961).
56.
Scase, W. Piers Plowman and the new anticlericalism. vol. 4 (Cambridge University Press, 2007).
57.
SIMPSON, J. FROM REASON TO AFFECTIVE KNOWLEDGE: MODES OF THOUGHT AND POETIC FORM IN ‘PIERS PLOWMAN’. Medium Ævum 55, (1986).
58.
James Simpson. The Transformation of Meaning: A Figure of Thought in Piers Plowman. The Review of English Studies 37, 161–183 (1986).
59.
Hussey, S. S. Langland, the mystics, and the medieval English religious tradition: essays in honour of S.S. Hussey. (D.S. Brewer, 1990).
60.
Spearing, A. C. Criticism and medieval poetry. (Edward Arnold, 1972).
61.
Stokes, M. Justice and mercy in Piers Plowman: a reading of the B text Visio. (Croom Helm, 1984).
62.
Robert Crowley’s ‘Piers Plowman’ by THORNE, J. R.. UHART, MARIE-CLAIRE. https://0-data-journalarchives-jisc-ac-uk.pugwash.lib.warwick.ac.uk/view?pubId=proquestpdf00200020-1986-055-00-000017pdf&tab=title&jid=393239333234383430%2331323837303431383839.
63.
Trigg, S. The Traffic in Medieval Women. Yearbook of Langland studies. 12, 5–29 (1998).
64.
Watson, N. Visions of Inclusion. Journal of medieval and early modern studies 27, 145–187 (1997).
65.
JOSEPH S. WITTIG. ‘PIERS PLOWMAN’ B, PASSUS IX - XII: ELEMENTS IN THE DESIGN OF THE INWARD JOURNEY. Traditio 28, 211–280 (1972).
66.
Wood, S. J. Conscience and the composition of Piers Plowman. (Oxford University Press, 2012).
67.
Piers Plowman Electronic Archive. http://piers.chass.ncsu.edu/.
68.
International Piers Plowman Society. http://www.piersplowman.org/index.asp.
69.
The Yearbook of Langland Studies.