Shaw, William
Longman Malaysia, 1970
Buku Teks
Marshall Cavendish Academic, 2004
Buku Teks
Buckley, Charles Burton, author
University of Malaya Press, 1969
Buku Teks
Lorenz, Christopher, author
Gramedia, 2000
Buku Teks
Barck, Oscar Theodore, Jr., 1902-1993, author
Macmillan, 1965
Buku Teks