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Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus John C. Haughey. Revisiting the Idea of Vocation: Theological Explorations. Washington, D.C.: Catholic University of America Press, 2004.
Lua MLA (9ú heag.)ebrary, Inc, agus John C. Haughey. Revisiting the Idea of Vocation: Theological Explorations. Catholic University of America Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.