O'Callaghan, P. (2011). Christ our hope: An introduction to eschatology. Catholic University of America Press.
Lua i Stíl Chicago (17ú heag.)O'Callaghan, Paul. Christ Our Hope: An Introduction to Eschatology. Washington, District of Columbia: Catholic University of America Press, 2011.
Lua MLA (9ú heag.)O'Callaghan, Paul. Christ Our Hope: An Introduction to Eschatology. Catholic University of America Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.