McQuail, Denis, author
Collier Macmillan , 1969
Buku Teks
Charles Atkin, Lawrence Wallack, editors
Sage, 1990
Buku Teks
Francois, William E.
Grid Inc., 1977
Buku Teks
McQuail, Denis, author
Longman, 1996
Buku Teks
International Engineering Consortium
Professional Education International, 2000
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