Gilman, Sander L., author
Polity Press, 2008
Buku Teks
Mohammed Ali
Punjab Eductional Press, 1964
Buku Teks
Sansom, George Bailey, Sir, 1883-1965, author
Cresset Press, 1946
Buku Teks
Victoria : Deakin University
Majalah, Jurnal, Buletin
Joe, Wanne J., author
Chung Ang University Press, 1981
Buku Teks