Graham, John, author
Penguin Books, 1983
Buku Referensi
Freeman, Roger L., author
Wiley, 1985
Buku Referensi
Valdar, Andy, author
Institution of Engineering and Technology, 2006
eBooks
edited by Ian Walden.
Oxford University Press, 2012
Buku Teks
Gross, Lynne Schafer
Iowa WCB , 1989
Buku Teks