Ferguson, D. (1998). The great commandment principle. Tyndale.
芝加哥风格引文Ferguson, David. The Great Commandment Principle. Wheaton: Tyndale, 1998.
MLA引文Ferguson, David. The Great Commandment Principle. Tyndale, 1998.
警告：这些引文格式不一定是100％准确.
APA引文