Ian Fisher, "Pope returns remains of 2 Orthodox patriarchs," San Diego Union-Tribune onlineArkivert 29. august 2007 hos Wayback Machine., 28. november 2004. Siden lest 26. april 2007.
tentmaker.org
Hanson, J.W. Universalism: The Prevailing Doctrine Of The Christian Church During Its First Five Hundred Years.Chapter XV: Gregory Nazianzen. Boston and Chicago Universalist Publishing House. 1899.
web.archive.org
Ian Fisher, "Pope returns remains of 2 Orthodox patriarchs," San Diego Union-Tribune onlineArkivert 29. august 2007 hos Wayback Machine., 28. november 2004. Siden lest 26. april 2007.