O'Brien, J. A. (1960). Why can't Catholics be Masons? Our Sunday Visitor Press.
Lua i Stíl Chicago (17ú heag.)O'Brien, John A. Why Can't Catholics Be Masons? Huntington, Ind.: Our Sunday Visitor Press, 1960.
Lua MLA (8ú heag.)O'Brien, John A. Why Can't Catholics Be Masons? Our Sunday Visitor Press, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.