Book 1: The Mystery of the Trinity, book 2: On Creation, book 3: On the Incarnation of the Word, translated by Giulio Silano, Mediaeval Sources in Translation 42, 43, 45, Toronto, 2007, 2008, 2008; 278 pp., 236pp.,189pp., pb. € 40.00, € 30.00, € 30.00, ISBN: 978–0–88844–292–5/293–2/295–6.