Referenced in:

• ed: 435 - London, British Library, Harley 3271 85-110 [base MS for Latin grammar (‘Beatus quid est’)]
• facs: 435 - London, British Library, Harley 3271 84 [fol. 99r]
• st: 435 - London, British Library, Harley 3271 67-82 [Latin grammar (‘Beatus quid est’)]
• st: 765 - Worcester, Cathedral Library, Q. 5 72-4 [parsing grammar]