Copi, I. M. (1979). Symbolic logic (5th ed.). Macmillan ; Prentice Hall of India.
芝加哥风格引文Copi, Irving M. Symbolic Logic. 5th ed. New York : New Delhi: Macmillan ; Prentice Hall of India, 1979.
MLA引文Copi, Irving M. Symbolic Logic. 5th ed. Macmillan ; Prentice Hall of India, 1979.
警告：这些引文格式不一定是100％准确.