Goldschmidt, Arthur, author
Westview Press, 1983
Buku Teks
edited by Sydney Nettleton Fisher
Cornell University Press , 1955
Buku Teks
Bill, James A., author
Little, Brown, 1979
Buku Teks
edited by Hussein Hassan Soliman
Routledge, 2013
Buku Teks
Harari, Maurice, author
Prentice-Hall, 1962
Buku Teks