Não informado. (1966). Educational Technology. Educational Technology Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Educational Technology. Englewood, NJ: Educational Technology Publications, 1966.
Lua MLA (8ú heag.)Não informado. Educational Technology. Educational Technology Publications, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.