(1976). Cathedral of SS. Peter and Paul: The Archdiocese of Philadelphia. S.I..
Chicago Style (17. basım) AtıfCathedral of SS. Peter and Paul: The Archdiocese of Philadelphia. S.I., 1976.
MLA (8th ed.) AtıfCathedral of SS. Peter and Paul: The Archdiocese of Philadelphia. S.I., 1976.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..