Sponheim, P. R. (1967). Contemporary forms of faith. Augsburg.
Lua i Stíl Chicago (17ú heag.)Sponheim, Paul R. Contemporary Forms of Faith. Minneapolis: Augsburg, 1967.
Lua MLA (9ú heag.)Sponheim, Paul R. Contemporary Forms of Faith. Augsburg, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.