Perko, F. M. (1989). Catholic & American: A popular history. Our Sunday Visitor Pub. Division.
Lua i Stíl Chicago (17ú heag.)Perko, F. Michael. Catholic & American: A Popular History. Huntington, Ind.: Our Sunday Visitor Pub. Division, 1989.
Lua MLA (8ú heag.)Perko, F. Michael. Catholic & American: A Popular History. Our Sunday Visitor Pub. Division, 1989.
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