Paine, Thomas
David Campbell Publishers, 1994
Buku Referensi
Frankland, Mark
Institution of Engineering and Technology, 2002
eBooks
Lane, Robert E.
The Free Press, 1962
Buku Teks SO
Kunstler, James Howard
Simon and Schuster, 1993
Buku Teks SO
Farb, Peter
E.P Dutton, 1968
Buku Teks SO