Foulkes, David, 1924-, author
Butterworth, 1968
Buku Teks
Geldart, William, 1870-1922, author
Oxford University Press, 1991
Buku Teks
Derbyshire, J. Denis, author
McGraw-Hill , 1979
Buku Teks
Hanson, John Lloyd, author
MacDonald & Evans, 1975
Buku Teks
Madgwick, P.J., author
Stanley Thornes, 1992
Buku Teks