Spear, Percival
Oxford University Press, 1949
Buku Teks
Lamb, Beatrice Pitney
Frederick A. Praeger , 1968
Buku Teks SO
R.S. Jassal, Joint Secretary, External Publicity Division,
Majalah, Jurnal, Buletin
Nanda, Rajni
Munshiram Manoharlal , 1992
Buku Teks
Azad, Maulana Abul Kalam
Longmans,Green and co, 1960
Buku Teks SO