Thielicke, H. (1968). I believe: The Christian's creed. Fortress Press.
芝加哥风格引文Thielicke, Helmut. I Believe: The Christian's Creed. Philadelphia: Fortress Press, 1968.
MLA引文Thielicke, Helmut. I Believe: The Christian's Creed. Fortress Press, 1968.
警告：这些引文格式不一定是100％准确.