Universitas Indonesia, 2004
UI - Skripsi Membership
edited by C.J. Armstrong and J.A. Large
Gower, 1988
Buku Referensi
edited by C.J. Armstrong and J.A. Large
Ashgate, 1992
Buku Referensi
Yuri Ananda Putri
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2017
UI - Tugas Akhir
Welch, William W., 1944-
Winthrop Publishers,, 1982.
Buku Teks