Eberhard, Wolfram, 1909-1989
St Edmundsbury Press, 1996
Buku Teks
Hughes, E.R.
Princeton University Press, 1960
Buku Teks SO
Morgan, Harry T.
California Perkins, 1942
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