Não informado. (1974). Communication Research. Sage Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. Communication Research. Beverly Hills, Calif: Sage Publications, 1974.
Lua MLA (8ú heag.)Não informado. Communication Research. Sage Publications, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.