Conway, D. A., & Munson, R. (1990). The elements of reasoning. Wadsworth.
Lua i Stíl Chicago (17ú heag.)Conway, David A., agus Ronald Munson. The Elements of Reasoning. California: Wadsworth, 1990.
Lua MLA (9ú heag.)Conway, David A., agus Ronald Munson. The Elements of Reasoning. Wadsworth, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.