George Ritzer, J. Michael Ryan:The Concise Encyclopedia of Sociology. John Wiley & Sons, 2010, ISBN 978-1-4443-9264-7 (google.de[abgerufen am 8.Januar 2017]).
K. Wallsten: Agenda Setting and the Blogosphere: An Analysis of the Relationship between Mainstream Media and Political Blogs. In: Review of Policy Research. 24, S. 567–587. doi:10.1111/j.1541-1338.2007.00300.x