Cambridge University Press, 2003
Buku Teks
Cambridge University Press, 2003
Buku Teks
Yoan Panjaitan, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2011
UI - Tesis (Open)
Yong-Shik, Lee, author
Kluwer, 2008
Buku Teks
Hutagalung, Christina, author
2017
UI - Tesis (Membership)