Referenced in:

• ed: 230 - Durham, Cathedral Library, B. II. 11 259-60 [De lapidibus coll. as D]
• mss: 230 - Durham, Cathedral Library, B. II. 11 275-6
• st: 363 - London, British Library, Cotton Tiberius A. iii, fols. 2-173 282 n. 122