edited by Warren K. Agee, Phillip H. Ault, Edwin Emery
Harper and Row, 1982
Buku Teks SO
Emery, Edwin
Dood, Mead & Company, 1971
Buku Teks SO
Agee, Warren Kendall
1982
Buku Teks SO
Francois, William E.
Grid Inc., 1977
Buku Teks SO
edited by Jay G. Blumler and Elihu Katz
Sage, 1974
Buku Teks SO