Lawrence Erlbaum Associates, Publishers, 2003
Buku Teks
Cutlip, Scott M., author
Prentice Hall International, 2000
Buku Teks
Oemi Abdurrachman
Citra Aditya Bakti, 1995
Buku Teks
Smith, Ronald D., author
Lawrence Erlbraum Associates, Publishers, 2005
Buku Teks
Smith, Ronald D., author
Lawrence Erlbraum Associates, Publishers, 2005
Buku Teks