Não informado. (1979). Educational communication and technology. Association for Educational Communications and Technology.
Lua i Stíl Chicago (17ú heag.)Não informado. Educational Communication and Technology. Washington: Association for Educational Communications and Technology, 1979.
Lua MLA (8ú heag.)Não informado. Educational Communication and Technology. Association for Educational Communications and Technology, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.