O'Hara, E. V. Catholic evidence work in the United States. Our Sunday Visitor Press.
Chicago-referens (17:e uppl.)O'Hara, Edwin V. Catholic Evidence Work in the United States. Huntington, Ind.: Our Sunday Visitor Press.
MLA-referens (8:e uppl.)O'Hara, Edwin V. Catholic Evidence Work in the United States. Our Sunday Visitor Press.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.