Buku Teks
Crowe, Norman, author
MIT Press, 1995
Buku Teks
Doren, Charles van, author
Frederick A. Praeger , 1967
Buku Teks
Daniel, Glyn, author
Victoria: Penguin Books Australia, 1962
Buku Teks
Sen, Amartya, 1933-, author
Belknap Press of Harvard University Press, 2009
Buku Teks