Whitfield, John
Institution of Engineering and Technology, 2008
eBooks
Pethebridge, Keith
McGraw-Hill, 2012
Buku Teks
Robertson, Christoper R.
London: Edward Arnold, 1993
Buku Teks
Adams, James E.
McGraw-Hill, 1985
Buku Teks SO
Boylestad, Robert L.
Prentice-Hall, 1983
Buku Teks