APA-čujuhus (7. p.)

Copi, I. M. (1986). Introduction to logic: Introduction to logic (7th ed.). Macmillan.

Chicago-čujuhus (17. p.)

Copi, Irving M. Introduction to Logic: Introduction to Logic. 7th ed. New York: Macmillan, 1986.

MLA-čujuhus (9. p.)

Copi, Irving M. Introduction to Logic: Introduction to Logic. 7th ed. Macmillan, 1986.

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