Perkins, Dexter
Indiana University Press, 1963
Buku Teks
Perkins,Dexter
Little, Brown and Company, 1944
Buku Teks
Soros, George, author
Public Affairs, 2006
Buku Teks
Sardar, Ziauddin, author
Classic Press, 2004
Buku Teks
Bailey, Thomas Andrew, 1902-1983, author
Cornell University Press, 1950
Buku Teks