Ronny Pratama, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2007
UI - Tesis (Membership)
Brannan, Tom, author
Gramedia Pustaka Utama, 1998
Buku Teks
Hifni Alifahmi, author
Examedia, 2008
Buku Teks
Blythe, Jim, author
Prentice-Hall, 2000
Buku Teks
Brannan, Tom, author
PPM, 2005
Buku Teks