Nissa Budiarti, author
2010
UI - Skripsi (Open)
Ahmad Suaedy, author
The Wahid Institute, 2012
Buku Teks
Seagrave, Sterling, author
Dunia Pustaka Jaya , 1996
Buku Teks
Martin Hidayat, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2010
UI - Skripsi (Open)
Muhammad Asad Shahab, author
Change, 2017
Buku Teks