Reason and Religious Belief: An Introduction to the Philosophy of Religion, 3rd edition (New York: Oxford Press, 2003).
?Theodicy: A Comparative Analysis? in Semper Reformandum: Studies in Honour of Clark Pinnock, eds., Stanley Porter and Anthony Cross (Crumbia, UK: Paternoster Press, 2003)
Religious Diversity: A Philosophical Assessment (Ashgate Press, 2002) ISBN 9780754615217