Kelley, Donald
Hardcourt Brace College Publisher, 1999
Buku Teks
Hunter, Shireen
M.E. Sharpe, 2004
Buku Teks
Salisbury, Harrison E.
Atheneum, 1965
Buku Teks
Rizki Andono Prakoso
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Tesis (Open)
Boilard, Steve D.
Harcourt Brace College Publisher, 1988
Buku Teks