Porter, Charles O. (Charles Orlando), 1919-2006
Macmillan, 1961
Buku Teks
edited by Joel S. Migdal
Cambridge , 2004
Buku Teks
Jacoby, Tamar
The Free Press , 1998
Buku Teks
Kohn, Howard
Simon & Schuster , 1998
Buku Teks
Rogers, William D.
Random House, 1967
Buku Teks