The Cambridge history of China
Denis Crispin Twitchett · Cambridge Univ. Press · 1998
Wikipedia
{{cite book |last=Twitchett |first=Denis Crispin |title=The Cambridge history of China |publisher=Cambridge Univ. Press |year=1998 |isbn=9780521243339}}
Denis Crispin Twitchett · Cambridge Univ. Press · 1998
{{cite book |last=Twitchett |first=Denis Crispin |title=The Cambridge history of China |publisher=Cambridge Univ. Press |year=1998 |isbn=9780521243339}}