Conway, D. A., & Munson, R. (1990). The elements of reasoning. Wadsworth.
Chicago-čujuhus (17. p.)Conway, David A., juo Ronald Munson. The Elements of Reasoning. California: Wadsworth, 1990.
MLA-čujuhus (9. p.)Conway, David A., juo Ronald Munson. The Elements of Reasoning. Wadsworth, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.