1. Astley, J. (2002),Ordinary Theology: looking, listening and learning in theology, Aldershot, Ashgate.
2. Bailey, E.I. (1997),Implicit Religion in Contemporary Society, Kampen, Kok Pharos.
3. Bruce, S. (2002),God is Dead: secularisation in the West, Oxford, Blackwell.
4. Barth, K. (1975),Church Dogmatics, Vol.1/1, Edinburgh, T. & T. Clark.
5. Farley, E. (1983),Theologia: the fragmentation and unity of theological education,Philadelphia, Pennsylvania, Fortress.