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.
García y García, Antonio. 1981. '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.'. ANUARIO DE HISTORIA DEL DERECHO ESPAÑOL. pp. 799-801.