Artikel Jurnal
tim penulis, Imran Hasibuan ... [et al.]; editor, Trimedya Panjaitan, Imran Hasibuan
Q-Communication, 2013
Buku Teks
Christopher R. Duncan, author
2004
Artikel Jurnal
Srihani Prasetyowati, author
Universitas Indonesia, 2006
UI - Tesis (Membership)
Universitas Indonesia, 2010
UI - Skripsi (Membership)