APA aipamena

Copi, I. M. (2019). Introduction to Logic (15th.). Routledge.

Chicago Style aipamena

Copi, Irving M. Introduction to Logic. 15th. Routledge, 2019.

MLA aipamena

Copi, Irving M. Introduction to Logic. 15th. Routledge, 2019.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.