APA-viite (7. p.)

Thielicke, H. (1968). I believe: The Christian's creed. Fortress Press.

Chicago-viite (17. p.)

Thielicke, Helmut. I Believe: The Christian's Creed. Philadelphia: Fortress Press, 1968.

MLA-viite (9. p.)

Thielicke, Helmut. I Believe: The Christian's Creed. Fortress Press, 1968.