Bostock, Gerald (2003). “Origen: the Alternative to Augustine?”. The Expository Times. 114 (10): 327. doi:10.1177/001452460311401001."Origen: the Alternative to Augustine?".The Expository Times 114 (10): 327. doi:10.1177/001452460311401001.
Heine, Ronald E. (2010). Origen: Scholarship in the Service of the Church. Oxford: OUP. tr. 275. ISBN978-0-19-920908-8.Origen: Scholarship in the Service of the Church. Oxford: OUP. p. 275.ISBN 978-0-19-920908-8.
Trigg, Joseph Wilson (1985). Origen: the Bible and Philosophy in the Third-Century Church. London: SCM Press. ISBN0-334-02234-7.Origen: the Bible and Philosophy in the Third-Century Church. London: SCM Press.ISBN 0-334-02234-7.
Trigg, Joseph Wilson (1998). Origen. New York: Routledge. ISBN0-415-11836-0.Origen. New York: Routledge.ISBN 0-415-11836-0.
Crouzel, Henri (1989). Origen. San Francisco: Harper & Row. ISBN0-06-061632-6.Origen. San Francisco: Harper & Row.ISBN 0-06-061632-6.
[./File:PD-icon.svg ] This article incorporates text from a publication now in the public domain: Jackson, Samuel Macauley, ed. (1914)."Origen". New Schaff–Herzog Encyclopedia of Religious Knowledge (third ed.).London and New York: Funk and Wagnalls.
