Morgan Kaufmann, 2013
eBooks
Hawryszkiewycz, Igor Titus
Prentice-Hall, 1988
Buku Teks SO
Kendall, Kenneth E.
Prentice-Hall, 1988
Buku Teks
Dennis, Alan, 1951-
John Wiley & Sons Inc., 2010
Buku Teks SO
Davis, Williams
Addison-Wesley, 1983
Buku Teks SO