APA-čujuhus (7. p.)

Copi Irving M. (2016). Introduction to Logic (14th.). Pearson.

Chicago-čujuhus (17. p.)

Copi Irving M. Introduction to Logic. 14th. Delhi: Pearson, 2016.

MLA-čujuhus (9. p.)

Copi Irving M. Introduction to Logic. 14th. Pearson, 2016.

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.