Agrawala, V. S., author
University of Lucknow , 1953
Buku Teks
Lamb, Beatrice Pitney
Frederick A. Preager , 1963
Buku Teks
Smith, William Roy
Yale University Press, 1938
Buku Teks
Basham, A.L., author
Grove Press, 1959
Buku Teks
R.S. Jassal, Joint Secretary, External Publicity Division,
Majalah, Jurnal, Buletin