APA Style

J., G, S., E., O, R. (1993). 20th-century Theology: God and the World in a Transitional Age . USA: Ivp Academic.

MLA Style

J., Grenz-, Stanley., E., Olson-, Roger. "20th-century Theology: God and the World in a Transitional Age". USA: Ivp Academic, 1993. Paperback.