Thielicke, H. (1968). I believe: The Christian's creed. Fortress Press.
Chicago-čujuhus (17. p.)Thielicke, Helmut. I Believe: The Christian's Creed. Philadelphia: Fortress Press, 1968.
MLA-čujuhus (9. p.)Thielicke, Helmut. I Believe: The Christian's Creed. Fortress Press, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.