Furfey, P. H. (1936). Catholic extremism. Preservation of the Faith.
Lua i Stíl Chicago (17ú heag.)Furfey, Paul Hanly. Catholic Extremism. Silver Spring, Md.: Preservation of the Faith, 1936.
Lua MLA (8ú heag.)Furfey, Paul Hanly. Catholic Extremism. Preservation of the Faith, 1936.
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