Bergen, P. J. (1934). The salvation of human society. National Council of Catholic Men.
Lua i Stíl Chicago (17ú heag.)Bergen, Peter J. The Salvation of Human Society. Washington: National Council of Catholic Men, 1934.
Lua MLA (8ú heag.)Bergen, Peter J. The Salvation of Human Society. National Council of Catholic Men, 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.