Robertson, Christoper R.
London: Edward Arnold, 1993
Buku Teks
Whitfield, John, author
Institution of Engineering and Technology, 2009
eBooks
Green, D.C., author
Longman Scientific & Tecnical, 1992
Buku Teks
Morris, Noel Malcolm, 1929-, author
Longman, 1980
Buku Teks
Lewis, M. L. (Maurice L.)
Stanley Thornes, 1992
Buku Teks