Hurley, P. J. (1988). A concise introduction to logic (3ª ed.). Wadsworth.
Chicago-čujuhus (17. p.)Hurley, Patrick J. A Concise Introduction to Logic. 3ª ed. Wadsworth, 1988.
MLA-čujuhus (9. p.)Hurley, Patrick J. A Concise Introduction to Logic. 3ª ed. Wadsworth, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.