Bloxam, GA
Gower Press, 1972
Buku Teks
Cropp, John Anthony David
John Wiley & Sons Ltd., 1970
Buku Teks
Cornish, W.R. (William Rodolph), 1937-, author
Sweet and Maxwell, 2007
Buku Referensi
Manchester, Colin, author
Routledge.Cavendish, Taylor & Francis Group, 2008
Buku Teks
Irish, Vivien, 1942- , author
Institution of Engineering and Technology, 2008
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