Studies in the collections of twelfth-century decretals from the papers of the late Walter Holtzmann, edited, revised and translated by C. R. CHENEY and Marv G. CHENEY (Monumenra Iuris Canonici - Series B: Corpus Collectionum vol. 3; Citta del Vaticano, Biblioteca Apostólica Vaticana, 1979), XXXII + 350 págs.