Thomas, F. W.
University of Calcuta, 1942
Buku Teks
Hutton, J.H.
Cambridge University Press , 1946
Buku Teks
Elliot, H.M., Sir, author
Susil Gupta, 1953
Buku Teks
England, George W.
Kent State University Press , 1974
Buku Teks
Elliot, H.M., Sir, author
Susil Gupta, 1953
Buku Teks