Libellus de modo poenitendi et confitendi.

Other editions of this work, also known from its incipit as Poeniteas cito, are entered under the heading Poenitentionarius. Attributed since the Middle Ages to Johannes de Garlandia or to Petrus Blesensis (cf. P. Michaud-Quantin, Sommes des casuistique et manuels de confession au moyen-age, Louvain, 1962, p.19). H. MacKinnon attributes to William de Montibus (Essays in medieval history presented to Bertie Wilkinson, ed. T.A. Sandquist and M.R. Powicke, Toronto, 1969, pp.40-45).