Wang, Gonglong, compiler
New Star Press, 2010
Buku Teks
Wang, gong long
Beijing Star Press, 2010
Buku Teks
Myongdo Language Institute, [date of publication not identified]
Buku Teks
Paton, Stewart
Routledge, 2008
Buku Referensi
Peng, Tan Huay
Marshall cavendish, 2010
Buku Teks