1. Adams, Douglas, 2016. The Hitchiker’s Guide to the Galaxy. London: Pan.
2. Burrell, David CSC. 2010. ‘Distinguishing God from the World’ in Davies, Brian OP (ed.), Language, Meaning, and God: Essays in Honour of Herbert McCabe. Second edition. Oxford: Oxford University Press. pp. 75–91.
3. Gellman, J., 1997. Experience of God and the Rationality of Theistic Belief. Ithaca, NY., Cornell University Press.
4. Hampson, Daphne, 2012. After Christianity. New edition. London, SCM.
5. Hughes, C. 2006. Kripke: Names. Necessity, and Identity. Oxford, Oxford University Press.