Riggs, Fred W.
University of Hawaii, 1977
Buku Teks
Peters, B. Guy
Routledge, 2009
Buku Teks
Padma Devi
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Cohen, Harry
The Iowa State University Press, 1965
Buku Teks
edited by Jon Pierre
Edward Elgar, 1994
Buku Teks