Não informado. (1975). Key abstracts. Institution of Electrical Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Key Abstracts. London: Institution of Electrical Engineers, 1975.
Lua MLA (8ú heag.)Não informado. Key Abstracts. Institution of Electrical Engineers, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.