The Encyclopedia of the Middle Ages. (2.vol). Ed.: André Vauchez in conjunction with Barrie Dobson and Michael Lapidge. James Clarke & Co Ltd., 2000.

Lund, N. (2013). The Encyclopedia of the Middle Ages. (2.vol). Ed.: André Vauchez in conjunction with Barrie Dobson and Michael Lapidge. James Clarke & Co Ltd., 2000. Historisk Tidsskrift, 101(2). Hentet fra https://tidsskrift.dk/historisktidsskrift/article/view/55974