Gw mau tau Réferènsi dari Ansgar. Jelasin dalam bahasa jawa

Pryce, Mark. Literary Companion to the Festivals: A Poetic Gathering to Accompany Liturgical Celebrations of Commemorations and Festivals. Minneapolis: Fortress Press, 2003.

Tschan, Francis J. History of the Archbishops of Hamburg-Bremen. New York: Columbia University Press, 1959.

Wood, Ian. The Missionary Life: Saints and the Evangelisation of Europe, 400 – 1050. Great Britain: Longman, 2001.