Oxford University Press, 1983
Buku Referensi
edited by Chris Mitchell
Institution of Engineering and Technology, 2008
eBooks
Oxford University Press, 1990
Buku Referensi
Dinter, Heinz, author
Macmillan, 1973
Buku Teks
Savage, John E., author
John Wiley & Sons, 1976
Buku Teks