Não informado. (2004). British Power Engineering. Heywood.
Lua i Stíl Chicago (17ú heag.)Não informado. British Power Engineering. London: Heywood, 2004.
Lua MLA (8ú heag.)Não informado. British Power Engineering. Heywood, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.