* Cassian, John. ''The Conferences of John Cassian''. (ISBN 0738829331)
==External linklinks==
*[http://ocafs.oca.org/FeastSaintsViewer.asp?FSID=100623 Venerable John Cassian the Roman] ([[OCA]])
*[http://goarch.org/en/chapel/saints.asp?contentid=445 Righteous John Cassian the Confessor] ([[GOARCH]])