madow, Pauline
The W. Wilson Company, 1964
Buku Teks
Brown, Pauline
Pageone, 2002
Buku Referensi
Brown, Pauline
Page One Publishing, 2002
Buku Referensi
Ren, Xiran, author
Dang dai shi jie chu ban she, 2010
Buku Referensi
edited by Li Zhaoguo and Liu Xiru
World Publishing Corporation,
Buku Teks