O'Brien, G. (2003). An essay on the economic effects of the reformation. IHS Press.
Lua i Stíl Chicago (17ú heag.)O'Brien, George. An Essay on the Economic Effects of the Reformation. Norfolk, VA: IHS Press, 2003.
Lua MLA (9ú heag.)O'Brien, George. An Essay on the Economic Effects of the Reformation. IHS Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.