Wilson, R. H. (1978). 25th Anniversary: Institutional Services Incorporated, Archdiocese of Philadelphia. S.l..
Chicago Style aipamenaWilson, Robert H. 25th Anniversary: Institutional Services Incorporated, Archdiocese of Philadelphia. S.l., 1978.
MLA aipamenaWilson, Robert H. 25th Anniversary: Institutional Services Incorporated, Archdiocese of Philadelphia. S.l., 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.