1. Wipo , Gesta Chuonradi, ed. H. Bresslau , Wiponis Opera, MGH SRG LXI
2. Vogel, C. and R. Elze ed., Le Pontifical romano-germanique du Xe siècle, 3 vols. (Studi e Testi), Vatican City (1963–72)
3. Wiederhold, W. ed., ‘Papsturkunden in Florenz’, Nachrichten von der Gesellschaft der Wissenschaften zu Gottingen. Phil.-hist. Klasse (1901)
4. Whitelock, D. , M. Brett and C. N. L. Brooke ed., Councils and Synods with Other Documents relating to the English Church, 1/2, Oxford (1981)
5. Vita Roberti de Arbrisselo, PL 162, cols.