Ries, A. (1992). Horse sense. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Ries, Al. Horse Sense. New York: Penguin Books, 1992.
Lua MLA (9ú heag.)Ries, Al. Horse Sense. Penguin Books, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.