Catholic Church. Diocese of Newark (N.J.). Bishop (1881-1901: Wigger) Pastoral letter. University of Notre Dame Archives.
Chicago-viite (17. p.)Catholic Church. Diocese of Newark (N.J.). Bishop (1881-1901: Wigger) Pastoral Letter. University of Notre Dame Archives.
MLA-viite (8. p.)Catholic Church. Diocese of Newark (N.J.). Bishop (1881-1901: Wigger) Pastoral Letter. University of Notre Dame Archives.
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