Freedman, Warren
Quorum Books , 1991
Buku Teks
Nurfadhilah
2009
UI - Tesis (Open)
Shepard Forman, Romita Ghosh, editor
Lynne Rienner, 2000
Buku Teks
Masrudi Muchtar
Aswaja Presindo, 2014
Buku Teks
The Massachusett Institute of Technology, 1977
Buku Teks