Bredero, A. (1994). Christendom and Christianity in the middle ages. William B. Eerdmans Publishing Company.
Tohutoru Kātū Chicago (17th ed.)Bredero, Adriaan. Christendom and Christianity in the Middle Ages. Michigan: William B. Eerdmans Publishing Company, 1994.
Tohutoro MLA (9th ed.)Bredero, Adriaan. Christendom and Christianity in the Middle Ages. William B. Eerdmans Publishing Company, 1994.
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