Sheen, F. J. (1952). The prodigal world (4th ed.). National Council of Catholic Men.
Lua i Stíl Chicago (17ú heag.)Sheen, Fulton J. The Prodigal World. 4th ed. Washington, D.C.: National Council of Catholic Men, 1952.
Lua MLA (8ú heag.)Sheen, Fulton J. The Prodigal World. 4th ed. National Council of Catholic Men, 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.