Besley Timothy. (2011). Pillars of Prosperity. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Besley Timothy. Pillars of Prosperity. New Jersey: Princeton University Press, 2011.
Lua MLA (9ú heag.)Besley Timothy. Pillars of Prosperity. Princeton University Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.