Rogers, Everett M., author
The Free Press, 1995
Buku Teks
Rogers, Everett M., author
The Free Press, 1983
Buku Teks
Rogers, Everett M., author
Free Press, 1969
Buku Teks
Clark, Peter, author
Sage, 2003
Buku Teks
Weatheritt, Mollie
Croom Helm, 1986
Buku Teks