Fisher, Alan S.
John Wiley & Sons, 1991
Buku Teks
Shiller, Larry
Yourdon Press, 1990
Buku Teks
edited by Michael R. Lowry and Robert D. McCartney
AAAI Press , 1991
Buku Teks
McClure, Carma L.
Prentice-Hall, 1989
Buku Teks
Vonk, Roland
Prentice-Hall, 1990
Buku Teks