Bibliographie
Meyer SCHAPIRO, The Parma Ildefonsus, a romanesque illuminated manuscript from Cluny, and related works, New York, College Art Association of America, 1964 (Monographs on archeology and fine arts, 11)
Etude
Livre
ICO. X 0082 (8°), ICO. X 3066 (4°) [Condorcet 2.066, Etude]