O. D. Watkins, M. A. A history of penance, being a study of the authorities. T. I. The Whole Church to A. D. 450; T. II. The Western Church from A. D. 450 to A. D. 1215 (Book Review) - ALÈS, A D' (Revue d'histoire ecclésiastique. I, Articles, comptes rendus et chronique, 1921)