Benjamin, Andrew
Academy group , 1992
Buku Teks SO
recovered by Sir Aurel Stein; described by Fred H. Andrews
Oxford Universityu Press, 1948
Buku Referensi
Wentinck, Ch
van der Peet, 1954
Buku Teks
Siti Adiyati, Sylvette et Marcel Boneff, editor
Panitia Paris, 1992
Buku Referensi
Cunningham, Antonia
Queen Street House, 2001
Buku Referensi