Wooley, Leonard
Penguin Books, 1952
Buku Teks
Vats, Madho Sarup
Government of India Press, 1940
Buku Teks
Harrer, Heinrich
Rupert Hart-Davis , 1957
Buku Teks
Harrer, Heinrich
E.P. Dutton, 1954
Buku Teks
Church, Horace K., author
McGraw-Hill, 1981
Buku Referensi