APA
Athey S., National Bureau of Economic Research, Calvano E. & Gans J. (2013). The Impact of the internet on advertising markets for news media. Cambridge: NBER.
Chicago
Athey Susan, National Bureau of Economic Research, Calvano Emilio and Gans Joshua. 2013. The Impact of the internet on advertising markets for news media. Cambridge: NBER.
Harvard
Athey S., National Bureau of Economic Research, Calvano E. and Gans J. (2013). The Impact of the internet on advertising markets for news media. Cambridge: NBER.
MLA
Athey Susan, National Bureau of Economic Research, Calvano Emilio and Gans Joshua. The Impact of the internet on advertising markets for news media. Cambridge: NBER. 2013.