APA Edition Citation

Copi,Irving M, & Cohen, C. (1997). Introduction to Logic (9th ed.). Prentice Hall of India.

Chicago Edition Citation

Copi,Irving M, and Carl Cohen. Introduction to Logic. 9th ed. New Delhi: Prentice Hall of India, 1997.

MLA Edition Citation

Copi,Irving M, and Carl Cohen. Introduction to Logic. 9th ed. Prentice Hall of India, 1997.