Berkhof, L. (1941). Systematic theology: With a complete textual index (4th ed.). Wm. B. Eerdmans.
芝加哥风格引文Berkhof, L. Systematic Theology: With a Complete Textual Index. 4th ed. Michigan: Wm. B. Eerdmans, 1941.
MLA引文Berkhof, L. Systematic Theology: With a Complete Textual Index. 4th ed. Wm. B. Eerdmans, 1941.
警告：这些引文格式不一定是100％准确.