edited by Jay G. Blumler and Elihu Katz
Sage, 1974
Buku Teks
McQuail, Denis, author
Longman, 1995
Buku Teks
Schramm, Wilbur, author
American Hospital Association, 1974
Buku Teks
Sandman, Peter M., author
Prentice-Hall, 1976
Buku Teks
McQuail, Denis, author
Collier Macmillan , 1969
Buku Teks