Wann, David, author
Island Press, 1996
Buku Teks
Kuhn, Arthur K., author
Macmillan, 1953
Buku Teks
Indian Committee for Cultural Freedom, 1999
Buku Teks
Sen, Amartya, 1933-, author
Anchor Books, 1999
Buku Teks
McPherson, James M.
Oxford University Press, 2002
Buku Teks