Irving M. Copi   (°1917, †2002)

Copi, Irving M., Carl Cohen, and Kenneth McMahon. 2014. Introduction to Logic. 14th ed. Harson: Pearson. (0 diagrams)

Copi, Irving M., and Carl Cohen. 1990. Introduction to Logic. 8th ed. New York, NY: MacMillan. (0 diagrams)

Copi, Irving M. 1979. Symbolic Logic. 5th ed. New York, NY: MacMillan. (0 diagrams)