Richard F. Venn, editor
CRC Press, Taylor & Francis Group, 2008
Buku Teks SO
Xu, Q. Alan, editor
Springer, 2012
eBooks
James D. Foley...[et.al]
Addison-Wesley , 1990
Buku Teks SO
Hartley, R.J.
Bowker-Saur, 1990
Buku Teks SO
Saad, Michel A.
Prentice-Hall, 1997
Buku Teks