(1961). Deel 27, № 6; Physica. 1961.
Lua i Stíl Chicago (17ú heag.)Deel 27, № 6; Physica. 1961, 1961.
Lua MLA (9ú heag.)Deel 27, № 6; Physica. 1961, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)