Rogers, Everett M., author
Free Press, 1994
Buku Teks
Rogers, Everett M., author
The Free Press, 1994
Buku Teks
edited by Lance Day and Ian McNeil
Roudledge, 1996
Buku Referensi
edited by Lance Day, Ian McNeil
Routledge, 1996
Buku Referensi
Lewes, George Henry, author
Cambridge University Network, 2012
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