Não informado. (1925). Technical news bulletin of the National Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards.
Lua i Stíl Chicago (17ú heag.)Não informado. Technical News Bulletin of the National Bureau of Standards. Washington: U.S. Department of Commerce, National Bureau of Standards, 1925.
Lua MLA (8ú heag.)Não informado. Technical News Bulletin of the National Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards, 1925.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.