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Cutts, E. L., Parish priests and their people in the Middle Ages. London, 1914.
Delehaye, H., Les legendes hagiographiques. Bruxelles, 1905.
Diehl, C., Manuel d’art Byzantin. Paris, 1910.
Dill, S., Roman Society in Gaul in the merovingian age. London, 1926.
Douglas, W. C., Church music in history and practice. New York, 1937.
Drake, M. and W., Saints and their emblems. London, 1916.
Duchartre, P. L., Mittelalterliche Plastik in Frankreich. München, 1925.