Raz, Joseph
Clarendon Press, 1970
Buku Teks
Mermin, Samuel, author
Little, Brown, 1982
Buku Teks
Wu, Min Aun, author
Heinemann Educational Books, 1975
Buku Teks
Wesley-Smith, Peter, author
Oxford University Press, 1987
Buku Teks
Johnson, Edward Lea, author
Methuen, 1969
Buku Teks