Wright, Robin B. 1948-
Tian Xia Wen Hua, 1993
Buku Teks
Calvocoressi, Peter
Longman, 1991
Buku Teks
Rourke, John T., author
Brooks/Cole, 1986
Buku Teks
Mansbach, Richard W., author
Houghton Miffiln, 2000
Buku Teks
Calvocoressi, Peter
Longman, 1992
Buku Teks