Four theories of the press : the authoritarian, liberarian, social responsability, and soviet communist concepts of what the press should be and do /

by Siebert, Frederick Seaton 1902-, Siebert, Frederick Seaton 1902-
Published 1963

Tres teorías sobre la prensa en el mundo capitalista /

by Siebert, Frederick Seaton 1902-, Siebert, Frederick Seaton 1902-, Peterson, Theodore Bernard 1918-
Published 1967