Não informado. (1928). Bureau of Standards Journal Research. U.S. Department of Commerce, National Bureau of Standards.
Lua i Stíl Chicago (17ú heag.)Não informado. Bureau of Standards Journal Research. Washington: U.S. Department of Commerce, National Bureau of Standards, 1928.
Lua MLA (8ú heag.)Não informado. Bureau of Standards Journal Research. U.S. Department of Commerce, National Bureau of Standards, 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.