Benjamin, Andrew
Academy group , 1992
Buku Teks
recovered by Sir Aurel Stein; described by Fred H. Andrews
Oxford Universityu Press, 1948
Buku Referensi
Hardi
Fadli Zon Library, 2011
Buku Teks
Fine Art Press, 1994
Majalah, Jurnal, Buletin
Wentinck, Ch
van der Peet, 1954
Buku Teks