Cita APA (7th ed.)

Copi, Irving M, & Cohen, C. /. R. (2018). Introduction to Logic (15th ed.). Routledge.

Cita Chicago (17th ed.)

Copi, Irving M, i Carl / Rodych Cohen. Introduction to Logic. 15th ed. New York / London: Routledge, 2018.

Cita MLA (9th ed.)

Copi, et al. Introduction to Logic. 15th ed. Routledge, 2018.