Eberhard, Wolfram
Routledge, 1996
Buku Referensi
Eberhard, Wolfram, 1909-1989
St Edmundsbury Press, 1996
Buku Teks
Laufer, Berthold, 1874-1934
E.J. Brill, 1909
Buku Teks SO
edited by John K. Fairbank
Phoenix Books, 1967
Buku Teks SO
edited by John K. Fairbank
The University of Chicago Press , 1957
Buku Teks SO