FitzGerald, W. L. (1891). Query concerning Beerd's or Beard's Castle.
Lua i Stíl Chicago (17ú heag.)FitzGerald, Walter Lord. Query Concerning Beerd's or Beard's Castle. 1891.
Lua MLA (9ú heag.)FitzGerald, Walter Lord. Query Concerning Beerd's or Beard's Castle. 1891.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
