Berkhof, L. (1941). Systematic theology. The Banner of Truth Trust.
芝加哥风格引文Berkhof, Louis. Systematic Theology. Edinburgh: The Banner of Truth Trust, 1941.
MLA引文Berkhof, Louis. Systematic Theology. The Banner of Truth Trust, 1941.
警告：这些引文格式不一定是100％准确.