Não informado. (1969). Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Current Papers in Electrical and Electronics Engineering. London: Institution of Electrical Engineers, 1969.
Lua MLA (8ú heag.)Não informado. Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.