Cita APA (7a ed.)

Copi , I. M. (1976). Symbolic Logic (5th.). Pearson.

Cita Chicago Style (17a ed.)

Copi , Irving M. Symbolic Logic. 5th. Delhi: Pearson, 1976.

Cita MLA (9a ed.)

Copi , Irving M. Symbolic Logic. 5th. Pearson, 1976.