Blois, Lukas de, author
Routledge, 1997
Buku Teks
edited by Mark Golden and Peter Toohey
Routledge, 1997
Buku Teks
Glover, T. R.
Penguin Books, 1944
Buku Teks
prepared by the Special Publications Division, National Geographic Society, Washington, D.C.
The National Geogarphic Society, 1986
Buku Referensi
Deng, Yinke, author
China Intercontinental Press, 2010
Buku Teks