10. Sources
Benevento, Biblioteca Capitolare V 21
London, The British Library, add. 30850 - Silos
London, British Museum - Ant. Sarisburiense
Paris, Bibliothèque nationale de France lat. 12584 - St-Maur-les-Fossés
Paris, Bibliothèque nationale de France lat. 17296 - Saint-Denis
Worcester, Cathedral Library 160 - Worcester