Kelley, D. (2013). Art of Reasoning: Introduction to Logic (4th.). Norton.
Lua i Stíl Chicago (17ú heag.)Kelley, David. Art of Reasoning: Introduction to Logic. 4th. New york: Norton, 2013.
Lua MLA (9ú heag.)Kelley, David. Art of Reasoning: Introduction to Logic. 4th. Norton, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.