Timothy Keller. (2008). Reason for god: Belief in an age of scepticism. Penguin group.
Chicago Edition CitationTimothy Keller. Reason for God: Belief in an Age of Scepticism. USA: Penguin group, 2008.
MLA Edition CitationTimothy Keller. Reason for God: Belief in an Age of Scepticism. Penguin group, 2008.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.