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Lynch, Joseph H. Early Christianity. A Brief History. New York: Oxford University Press, 2010. s. 91-120, 131-222. (122 s.)
Marshall, Peter. The Reformation. A Very Short Introduction. Oxford: Oxford University Press, 2009. (150 s.)
Sigur?sson, Jan Vi?ar. Kristninga i Norden 750-1200. Oslo: Samlaget, 2003. 127 s.
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