Lund N. Eric Knibbs: Ansgar, Rimbert and the Forged Foundations of Hamburg-Bremen. (Church, faith and culture in the medieval West). Ashgate, London, 2011. ht [Internet]. 6. marts 2013 [henvist 16. juli 2024];112(1). Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/56562