Yuen, Ren Chao, author
Harvard University Press, 1962
Buku Referensi
edited by Colin Howlett
Oxford University Press, 1996
Buku Referensi
Statt, David A., author
Routledge, 1999
Buku Referensi
Oxford University Press, New York
Buku Referensi
Doubleday, 1982
Buku Referensi