Marius, R. (1975). Luther. Quartet Books.
Lua i Stíl Chicago (17ú heag.)Marius, Richard. Luther. London: Quartet Books, 1975.
Lua MLA (8ú heag.)Marius, Richard. Luther. Quartet Books, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.