Russel, Fox Hon, author
Covendish Publishing Limited, 2000
Buku Teks
Keylor, William R., 1944-
Oxford University Press, 1996
Buku Teks
Anderson, M.S., author
Longman, 1971
Buku Teks
Gossel, Peter, author
Taschen, 2001
Buku Teks
Ashley, Maurice, author
Frederick A. Praeger, 1969
Buku Teks