Eberhard, Wolfram
Routledge, 1996
Buku Referensi
Hughes, E.R.
Princeton University Press, 1960
Buku Teks
Morgan, Harry T.
California Perkins, 1942
Buku Teks
edited by John K. Fairbank
The University of Chicago Press , 1957
Buku Teks
editor Arthur F. Wright
CUniversity of Chicago Press , 1953
Buku Teks