Durbin, John R., author
John Wiley & Sons, 1979
Buku Teks
Cullen, Charles G., author
PWS Publishing, 1994
Buku Teks
Strang, Gilbert, author
Wellesley-Cambridge, 1993
Buku Teks
Whitelaw, Thomas A., author
Blackie Academic & Professional, 1995
Buku Teks
Barnes, Wilfred E., author
D. C. Hearth, 1963
Buku Teks