(1956). Vol. 69, № 6; The Proceedings of the Physical Society. Ser. A. 1956.
Lua i Stíl Chicago (17ú heag.)Vol. 69, № 6; The Proceedings of the Physical Society. Ser. A. 1956, 1956.
Lua MLA (9ú heag.)Vol. 69, № 6; The Proceedings of the Physical Society. Ser. A. 1956, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.