Copi, I. M. (2019). Introduction to Logic (15th.). Routledge.
芝加哥风格引文Copi, Irving M. Introduction to Logic. 15th. Routledge, 2019.
MLA引文Copi, Irving M. Introduction to Logic. 15th. Routledge, 2019.
警告：这些引文格式不一定是100％准确.
APA引文