Referenced in:

• st: 86 - Cambridge, Corpus Christi College, 302 185
• st: 109 - Cambridge, Corpus Christi College, 421 185
• mss: 941 - Vercelli, Biblioteca Capitolare, CXVII (the ‘Vercelli Book’) 175-7
• st: 941 - Vercelli, Biblioteca Capitolare, CXVII (the ‘Vercelli Book’)