Referenced in:

• mss: 891 - Paris, Bibliothèque nationale de France, lat. 8824 II.76-8
• mss: 896 - Paris, Bibliothèque nationale de France, lat. 10575 (the ‘Egbert Pontifical’) I.xxv, II.160-4
• mss: 920 - Rouen, Bibliothèque municipale, 231 (A. 44) II.194-7