Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2014
UI - Skripsi (Membership)
Howard, Michael C.
New York Harper Collins College 1993,
Buku Teks
Nelson, Harry, author
New York West 1988,
Buku Teks
New York Routledge 1996,
Buku Teks
Palmer, Gary B.
University of Texas Press, 1999
Buku Teks