Kreeft, P. (1988). Fundamentals of the faith: Essays in Christian apologetics. Ignatius.
芝加哥风格引文Kreeft, Peter. Fundamentals of the Faith: Essays in Christian Apologetics. San Francisco: Ignatius, 1988.
MLA引文Kreeft, Peter. Fundamentals of the Faith: Essays in Christian Apologetics. Ignatius, 1988.
警告：这些引文格式不一定是100％准确.