Hill, David, 1951-
John Wiley & Sons, 1998
Buku Teks SO
edited by Sumner N, Levine
Interscience Publishers, 1968
Buku Teks SO
Renato M. Natal Jorge, Joao Manuel R.S. Tavares, Marcos Pinotti Barbosa, A.P. Slade, editor
[, Springer], 2012
eBooks
Bahill, A. Terry
Prentice-Hall, 1981
Buku Teks SO
Fatunde, Olumurejiwa A.
Springer, 2012
eBooks