1. Milburn, R. L. P. Early Christian art and architecture (Berkeley: University of California Press, 1988).
2. Jensen, R. M. . Face to face: portraits of the divine in early Christianity (Minneapolis: Fortress, 2005).
3. Grigg, R. ‘Aniconic worship and the apologetic tradition’, Church history 45 (1976)
4. Murray, Sr Charles . Rebirth and afterlife: a study of the transmutation of some pagan imagery in early Christian funerary art (Oxford: BAR, 1981).
5. Jensen, R. M. ‘The Dura Europos synagogue, early Christian art, and religious life in Dura Europos’, in Jews, Christians, and polytheists in the ancient synagogue, S. Fine (ed.) (London: Routledge, 1999)