The Chaucer Review: An Indexed Bibliography (Vols. 1-30)

Merix, Robert P. "Sermon Structure in the Pardoner's Tale." 17 (1983): 235-49.
The specific sermon form previously thought to apply to all late medieval sermons only applies to the sermon a candidate for a Master's of Theology would give. Public sermons were much less fixed in form. Careful examination of the Pardoner's Tale reveals that it follows the sermon form, uses similar rhetorical techniques, and has the same relationship of theme to form as most medieval sermons.

Wenzel, Siegfried. "Notes on the Parson's Tale." 16 (1982): 237-56.
Certain passages in the Parson's Tale are closely related to sermon texts on pride and penitence. The image of the Tree of Penance derives from the Compileison de Seinte Penance which incorporates parts of the Ancrene Riwle. For all of its borrowing from sermons, the Parson's Tale is not a sermon, but a handbook devoted to penitence.