Walter Lowrie, Monuments of the Early Church, Macmillan, 1901, p. 238
Dom Dunstan Adams, What is Prayer?, Gracewing Publishing, 1999, p. 48
Father John J
Pasquini, John J. Pasquini, True Christianity: The Catholic Way, iUniverse, 2003, p. 105
Augustus John
Cuthbert Hare, Walks in Rome, Volume 1, Adamant Media Corporation, 2005, p. 201
Michael Green, Evangelism in the Early Church, Wm. B. Eerdmans Publishing, 2004, p. 244
David L. Balch, Carolyn Osiek, Early Christian Families in Context: An Interdisciplinary Dialogue, Wm. B. Eerdmans Publishing, 2003, p. 103
B. Hudson MacLean, An introduction to Greek epigraphy of the Hellenistic and Roman periods from Alexander the Great down to the reign of Constantine, University of Michigan Press, 2002, p. 208
Hans Schwarz, Christology, Wm. B. Eerdmans Publishing, 1998, p. 207
Edward L Cutts, History of Early Christian Art, Kessinger Publishing, 2004, p. 200
Harold Bayley, Archaic England,: An essay in deciphering prehistory from megalithic monuments, earthworks, customs, coins, place-names, and faerie superstitions, Chapman & Hall, 1920, p. 393-394
David L. Balch, Carolyn Osiek, Early Christian Families in Context: An Interdisciplinary Dialogue, Wm. B. Eerdmans Publishing, 2003, p. 103, footnote 83