Electrical Research Association Ltd
Pergamon Press, 1979
Buku Referensi
Garland, Harry, author
Erlangga, 1984
Buku Teks
Bolton, W. (William), 1933-, author
Longman , 2000
Buku Teks
McGlynn, Daniel R., author
John Wiley & Sons, 1980
Buku Teks
Sinclair, Ian R.
Butterworth, 1981
Buku Teks