Prasad, Biren
Prentice-Hall, 1996
Buku Teks
edited by Douglas C. Greenwood
McGraw-Hill, 1959
Buku Referensi
edited by Douglas C. Greenwood
McGraw-Hill, 1961
Buku Teks
Ashby, Mike, author
Butterworth-Heinemann, 2014
eBooks
Taylor & France, 1999
Buku Teks SO