Zeitlin, Irving M.
Polity Press, 2007
Buku Teks
Woodford, A.O.
W.H. Freeman, 1965
Buku Teks
Shepperd, William R.
Barnes and Noble, 1959
Buku Referensi
Australia : Department of History University of Melbourne
Majalah, Jurnal, Buletin
Cambridge University Press , Cambridge : Cambridge University Press
Majalah, Jurnal, Buletin