<ref name="dictionary">"Mass media", Oxford English Dictionary, online version November 2010 {{page needed|date=November 2011}}</ref>
<ref name="enotes">{{cite web | url=http://www.enotes.com/mass-media-article | title=Mass Media | accessdate=November 28, 2011}}</ref>
<ref name="incorporated">News Incorporated: Corporate Media Ownership And Its Threat To Democracy. Ed. Elliot D. Cohen. Prometheus Books, 2005. {{ISBN|1-59102-232-0}} {{page needed|date=November 2011}}</ref>
<ref name="ramey-2007-1-2">{{cite book|author=Ramey, Carl R.|title=Mass media unleashed: how Washington policymakers shortchanged the American public|publisher=Rowman & Littlefield|year=2007|isbn=978-0-7425-5570-9|pages=1–2|url=https://books.google.com/books?id=H0P5ZhqXow4C&pg=PA1}}</ref>
<ref name="sandiego">{{cite web|url=http://history.sandiego.edu/gen/recording/notes.html |title=Recording Technology History |deadurl=yes |archiveurl=https://web.archive.org/web/20100312213800/http://history.sandiego.edu/GEN/recording/notes.html |archivedate=12 March 2010 |df= }}</ref>
