Maria Nova Marannu M., author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2010
UI - Tesis (Open)
Vaeth, J. Gordon
The Ronald Press, 1965
Buku Teks
Armstrong, Amatullah, author
Karachi : Ferozsons, 2001
Buku Teks
Amstrong, Amatullah, author
Ferozsons, 2001
Buku Teks
Clarke, Arthur C.
Harper and Row, 1965
Buku Teks