Wilson, R. H. (1978). 25th Anniversary: Institutional Services Incorporated, Archdiocese of Philadelphia. S.l..
Chicago-referens (17:e uppl.)Wilson, Robert H. 25th Anniversary: Institutional Services Incorporated, Archdiocese of Philadelphia. S.l., 1978.
MLA-referens (8:e uppl.)Wilson, Robert H. 25th Anniversary: Institutional Services Incorporated, Archdiocese of Philadelphia. S.l., 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.