Referenced in:

• st: 310 - London, British Library, Cotton Caligula A. xiv, fols. 93-130 305
• st: 315 - London, British Library, Cotton Claudius B. iv 293
• st: 359 - London, British Library, Cotton Otho C. i, vol. II 71-2
• st: 632 - Oxford, Bodleian Library, Hatton 76 (S.C. 4125), fols. 1-67 153-4 [Admonitio]