The Epistle of Cyril to Nestorius with the Twelve
Sanborn-Percival translation. Complete. With notes. From the Nicene and Post-Nicene Fathers of the Christian Church, second series, vol. 14.
Third Letter of Cyril to Nestorius
Tanner translation. Omits the preface. Emphasis inserted by persons unknown. Had been composed at the Synod of Alexandria in 430, and was included in the proceedings of the Council of Ephesus.