Bredero, A. (1994). Christendom and Christianity in the middle ages. William B. Eerdmans Publishing Company.
Lua i Stíl Chicago (17ú heag.)Bredero, Adriaan. Christendom and Christianity in the Middle Ages. Michigan: William B. Eerdmans Publishing Company, 1994.
Lua MLA (9ú heag.)Bredero, Adriaan. Christendom and Christianity in the Middle Ages. William B. Eerdmans Publishing Company, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.