Beijing Huayu Jiaoxve Chubanshe (Sinolingua Press) 1999
Buku Referensi
Fowler, H. W. (Henry Watson), 1858-1933, author
New York Oxford University Press 1965
Buku Referensi
Krause, Wayne B
Jakarta: Elex Media Komputerindo, 2002
Buku Teks
England Longman 1983
Buku Referensi
Beijing Waiyanshe (Foreign Language Teaching and Research Press) 2001
Buku Referensi