Brash, R. R. (1861). Round tower controversy. The belfry theory examined.
Lua i Stíl Chicago (17ú heag.)Brash, Richard Rolt. Round Tower Controversy. The Belfry Theory Examined. 1861.
Lua MLA (9ú heag.)Brash, Richard Rolt. Round Tower Controversy. The Belfry Theory Examined. 1861.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
