Nimmo, D. D. (1962). News sources and news channels: A study in political communication. University Microfilms.
Lua i Stíl Chicago (17ú heag.)Nimmo, Dan Dean. News Sources and News Channels: A Study in Political Communication. [Ann Arbor, Mich: University Microfilms, 1962.
Lua MLA (9ú heag.)Nimmo, Dan Dean. News Sources and News Channels: A Study in Political Communication. University Microfilms, 1962.
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