Kumar, Deepak, author
Oxford University Press, 2016
eBooks
Gorringe, Hugo, author
Oxford University Press, 2017
eBooks
Sarkar, Sumit
People Publishing House, 1973
Buku Teks
The Johns Hopkins Press, 1928
Buku Teks
edited by Janice McLean
Gale Research, 1991
Buku Referensi