(1930). Vol. 35, № 4-6; Physical Review. Second Series. 1930.
Lua i Stíl Chicago (17ú heag.)Vol. 35, № 4-6; Physical Review. Second Series. 1930, 1930.
Lua MLA (9ú heag.)Vol. 35, № 4-6; Physical Review. Second Series. 1930, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.