Catholic Church. Diocese of Newark (N.J.). Bishop (1881-1901: Wigger) Pastoral letter. University of Notre Dame Archives.
Chicago-referens (17:e uppl.)Catholic Church. Diocese of Newark (N.J.). Bishop (1881-1901: Wigger) Pastoral Letter. University of Notre Dame Archives.
MLA-referens (8:e uppl.)Catholic Church. Diocese of Newark (N.J.). Bishop (1881-1901: Wigger) Pastoral Letter. University of Notre Dame Archives.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.