Gaya APA

Grenz, S, J, &, O, R, E. (1992). 20th-century theology: God & the world in a transitional age. . Downers Grove: Downers Grove Inter Varsity Press.

Gaya MLA

Grenz, Stanley, J., &, Olson,, Roger, E.. "20th-century theology: God & the world in a transitional age. ". Downers Grove: Downers Grove Inter Varsity Press, 1992. Buku.