Two articles that provide an overview of public sphere theories that are sophisticated without being too overwhelming for undergraduates are: Douglas Kellner, (2000) "Habermas, the Public Sphere, and Democracy: A Critical Intervention," in Perspectives on Habermas, edited by Lewis Hahn. Open Court Press. Francis Cody, (2011) "Publics and Politics" Anna. Rev. Anthropol. 40:3.1-3.16 John Monberg