Hurley, P. J. (1985). A concise introduction to logic (2nd ed.). Wadsworth.
Chicago-čujuhus (17. p.)Hurley, Patrick J. A Concise Introduction to Logic. 2nd ed. Belmont, Calif.: Wadsworth, 1985.
MLA-čujuhus (9. p.)Hurley, Patrick J. A Concise Introduction to Logic. 2nd ed. Wadsworth, 1985.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.