Wang, Gonglong, compiler
New Star Press, 2010
Buku Teks
Han, Jiantang
Cambridge University Press, 2012
Buku Teks
Myongdo Language Institute, [date of publication not identified]
Buku Teks
Paton, Stewart
Routledge, 2008
Buku Referensi
Li, Leyi
Beijing Language and Culture University, 1993
Buku Teks