Gostick Adrian. (2009). Carrot Principle. Free Press.
Lua i Stíl Chicago (17ú heag.)Gostick Adrian. Carrot Principle. New York: Free Press, 2009.
Lua MLA (9ú heag.)Gostick Adrian. Carrot Principle. Free Press, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.