Short, James F., author
University of Chicago Press, 1974
Buku Teks
Cambridge University Press, 1996
Buku Teks
Dwi Herbyan Widianto, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Skripsi (Open)
West, D.J.
Heinemann, 1973
Buku Teks
Norwegian University Press, 1991
Buku Teks