Referenced in:

• st: 387 - London, British Library, Cotton Vespasian B. xx 133-49
• st: 419 - London, British Library, Harley 526, fols. 1-27 lxxviii-lxxxi [on fols. 38-57]
• st: 434.5 - London, British Library, Harley 3097 lii-lvii [Folcard]