Ulloth, D. R. (1992). Communication technology: A survey. University Press of America.
Lua i Stíl Chicago (17ú heag.)Ulloth, Dana Royal. Communication Technology: A Survey. Lanham, Md: University Press of America, 1992.
Lua MLA (9ú heag.)Ulloth, Dana Royal. Communication Technology: A Survey. University Press of America, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.