Não informado. (1972). Electronics and communications abstracts journal. Cambridge Scientific Abstracts.
Lua i Stíl Chicago (17ú heag.)Não informado. Electronics and Communications Abstracts Journal. Bethesda, Md: Cambridge Scientific Abstracts, 1972.
Lua MLA (8ú heag.)Não informado. Electronics and Communications Abstracts Journal. Cambridge Scientific Abstracts, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.