Andrew, Malcolm and Ronald Waldron (Eds.). Pearl, Cleanness, Patience, Sir Gawain and the Green Knight. Exeter 1987.
Cawley, A. C. and J. J. Anderson (Eds.). Pearl, Cleanness, Patience ans Sir Gawain and the Green Knight. London/New York 1976.
Gollancz, Israel (Ed.). Cleanness: An Alliterative Tripartitr Poem on the Deluge, the Destruction of Sodom, and the Death of Belshazzar, by the Poet of Pearl, with a new translation by Derek Brewer. Cambridge 1974.
Studies:
Bennett, Michael J. Community, Class and Careerism: Cheshire and Lancashire Society in the Age of 'Gawain'. Cambridge 1983.
Crawford, Donna. "The Architectonics of Cleanness," SP 90 (1993):29-45.
Glenn, Jonathan A. "Dislocation of 'Kynde' in the Middle English 'Cleanness'," ChauR 18 (1983):77-91.
Ingledew, Francis. "Liturgy, Prophecy, and Belshazzar's Babylon: Discourse and Meaning in Cleanness," Viator 23 (1992):247-279.
Markus, Manfred. Moderne Erzählperspektive in den Werken des Gawain- Autors. Regensburg 1971
Means,Michael H. The Homiletic Structure of 'Cleanness'," SMC 5 (1975):165-172.