Kalb. Imperial Gamble. Brookings Institution Press.
Lua i Stíl Chicago (17ú heag.)Kalb. Imperial Gamble. Brookings Institution Press.
Lua MLA (8ú heag.)Kalb. Imperial Gamble. Brookings Institution Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.