Studies in the collections of twelfth-century decretals from the papers of the late Walter Holtzmann, edited, revised and translated by Christopher R. Cheney and Mary G. Cheney. Città del Vaticano, Biblioteca apostolica Vaticana, 1979. In-8°, XXXII-350 pages (Monumenta juris canonici, series B : Corpus collectionum, 3.)