Referenced in:

• ed: 516 - London, Lambeth Palace Library, 414, fols. 1-80 39 [De septem gradibus ecclesiae]
• mss: 516 - London, Lambeth Palace Library, 414, fols. 1-80 39
• st: 516 - London, Lambeth Palace Library, 414, fols. 1-80 39-41 [De septem gradibus ecclesiae]