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.