*'The Ladder of Divine Ascent' as published by [http://www.thehtm.org/ Holy Transfiguration Monastery]
*Orthodox Church in America, biography on St. John of Sinai
*[http://www.monachos.net/patristics/klimakos_repentance.shtml 'On Repentance that Leads to Joy: The Spirituality of St John Klimakos'], by M.C. Steenberg, on-line at from the [http://www.monachos.net Monachos.net web site]
==Secondary literature==