Hurley, P. J. (2006). Concise Introduction To Logic (9th ed.). Thomson.
Chicago-čujuhus (17. p.)Hurley, Pattrick J. Concise Introduction To Logic. 9th ed. Australia: Thomson, 2006.
MLA-čujuhus (9. p.)Hurley, Pattrick J. Concise Introduction To Logic. 9th ed. Thomson, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.