edited by John Ayto
Helicon, 1994
Buku Referensi
Scharfstein, Zevi, author
America : Shilo Publishing House, 1073
Buku Referensi
Albert, Loy Morehead, editors
New American Library, 1972
Buku Referensi
Beijing Huayu Jiaoxve Chubanshe (Sinolingua Press) 1999
Buku Referensi
Oxford University press , 1994
Buku Teks