Chandra, Bipan
National Council of Educational Research and Training, 1971
Buku Teks
Smith, Vincent A.
The Clarendon Press, 1958
Buku Teks
Lamb, Beatrice Pitney
Frederick A. Praeger , 1968
Buku Teks
Agrawala, V. S., author
University of Lucknow , 1953
Buku Teks
Lamb, Beatrice Pitney
Frederick A. Preager , 1963
Buku Teks