Gonzenbach, William J, et al. First and Second Levels of Intermedia Agenda Setting: Political Advertising, Newspapers, and Twitter During the 2012 Us Presidential Election.
APA
Gonzenbach, W., Vargo, C., & Kim, Y., & Kim, Y.First and Second Levels of Intermedia Agenda Setting: Political Advertising, Newspapers, and Twitter During the 2012 US Presidential Election.
Chicago
Gonzenbach, William J., Chris J Vargo, Yeojin Kim, and Youngju Kim.First and Second Levels of Intermedia Agenda Setting: Political Advertising, Newspapers, and Twitter During the 2012 Us Presidential Election.