Ogilvy, David, author
Tian xia wen hua fa xing : Li guang zong jing xiao, 1995
Buku Teks
Swan, Michael, author
Longmans, 1950
Buku Teks
Swan, Michael, author
Longmans Green, 1969
Buku Teks
Kramer, Leonie, author
Sun Books, 1973
Buku Teks
Dupee, F.W., author
Doubleday, 1956
Buku Teks