Columbia subject headings:
Harvard subject headings:
Communication in politics--Europe.
Digital communications--Political aspects--Europe.
European Union--In mass media.
Mass media--Political aspects--Europe.
Online social networks--Political aspects--Europe.
Social media--Political aspects--Europe.
Princeton subject headings:
Communication in politics--Europe.
Digital communications--Political aspects--Europe.
European Union--In mass media.
Mass media--Political aspects--Europe.
Online social networks--Political aspects--Europe.
Social media--Political aspects--Europe.