Wimmer, R. D. (2000). Mass media research. Wadsworth.
Lua i Stíl Chicago (17ú heag.)Wimmer, Roger D. Mass Media Research. Wadsworth, 2000.
Lua MLA (8ú heag.)Wimmer, Roger D. Mass Media Research. Wadsworth, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.