Guile, A.E.
Pergamon Press, 1986
Buku Teks
Wildi, Theodore
Prentice-Hall, 1997
Buku Teks
Rao, T.S. Madhava
Khanna, 1974
Buku Teks
Chowdhuri, Printidra
John Wiley & Sons, 1996
Buku Teks
edited by The Electricity Training Association
The Institution of Electrical Engineers, 1995
Buku Teks