Chapman, John (1909): Eutyches. The Catholic Encyclopedia. New York: Robert Appleton Company. Retrieved October 17, 2020 from New Advent: http://www.newadvent.org/cathen/05631a.htm (zadnji ogled 17. 10. 2020).

Sv. Leon Veliki: pismo Flavijanu: http://www2.arnes.si/~supmspel/patres/leon/tomus-fl.pdf (zadnji ogled 2. 10. 2020).