Ishay, Michreline R., author
Alfred A. Knopf, 1967
Buku Teks
Gonda, J. (Jan), 1905-1991, author
E.J. Brill, 1969
Buku Teks
recovered by Sir Aurel Stein; described by Fred H. Andrews
Oxford Universityu Press, 1948
Buku Referensi
Wood, James, author
Warner , 1958
Buku Referensi
Blackson, Thomas A., author
Wiley-Blackwell, 2011
Buku Teks