APA (7th ed.) Citation

Catholic Church. Congregatio pro Doctrina Fidei & Catholic Church. United States Conference of Catholic Bishops. (2001). Letter sent by the Congretation for the Doctrine of the Faith to bishops of the entire Catholic Church and to other interested ordinaries and hierarchs: On more grave delicts reserved to the same Congregation for the Doctrine of the Faith. [Congregation for the Doctrine of Faith].

Chicago Style (17th ed.) Citation

Catholic Church. Congregatio pro Doctrina Fidei and Catholic Church. United States Conference of Catholic Bishops. Letter Sent by the Congretation for the Doctrine of the Faith to Bishops of the Entire Catholic Church and to Other Interested Ordinaries and Hierarchs: On More Grave Delicts Reserved to the Same Congregation for the Doctrine of the Faith. Vatican City: [Congregation for the Doctrine of Faith], 2001.

MLA (8th ed.) Citation

Catholic Church. Congregatio pro Doctrina Fidei and Catholic Church. United States Conference of Catholic Bishops. Letter Sent by the Congretation for the Doctrine of the Faith to Bishops of the Entire Catholic Church and to Other Interested Ordinaries and Hierarchs: On More Grave Delicts Reserved to the Same Congregation for the Doctrine of the Faith. [Congregation for the Doctrine of Faith], 2001.

Warning: These citations may not always be 100% accurate.