Gaya APA

St., C, A. (2009). Festal letters 1-12. Translated by Philip R. Amidon, edited & introduction by John J. O'Keefe. : Correspondence. . Washington: Washington Catholic University of America Press.

Gaya MLA

St., Cyrillus, Alexandrinus,. "Festal letters 1-12. Translated by Philip R. Amidon, edited & introduction by John J. O'Keefe. : Correspondence. ". Washington: Washington Catholic University of America Press, 2009. Buku.