Não informado. (1971). Information Processing Letters. Elsevier Science Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Information Processing Letters. Amsterdam: Elsevier Science Publishers, 1971.
Lua MLA (8ú heag.)Não informado. Information Processing Letters. Elsevier Science Publishers, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.