Fridrichsen, A. (1972). The problem of miracle in primitive christianity. Augsburg.
Lua i Stíl Chicago (17ú heag.)Fridrichsen, Anton. The Problem of Miracle in Primitive Christianity. Minneapolis: Augsburg, 1972.
Lua MLA (9ú heag.)Fridrichsen, Anton. The Problem of Miracle in Primitive Christianity. Augsburg, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.