Tucker, William P.
University of Minnesota Press, 1958
Buku Teks
Marcos, Subcomandante
Insist Press, 2003
Buku Teks
A. Fauzan Azhima
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2011
UI - Skripsi Open
[publisher not identified], 1990
Buku Teks SO
Parker, R.S., editor
Prentice Hall International, 1978
Buku Teks SO