APA Style

Grenz, S, J, O, E. (2005). 20th Century Theology: God & the world in a transitional Age (Cet. 17). Downers Grove: Intervarsity Press.

MLA Style

Grenz, Stanley, J.;, Olson,Roger, E.. "20th Century Theology: God & the world in a transitional Age". Cet. 17 Downers Grove: Intervarsity Press, 2005. Text.