Saharso
Analisis implementasi customer relationship management: Kasus Di PT Indosat
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2006
 UI - Tesis Membership
Ignizio, James P.
Introduction to expert systems: the development and implementation of rule-based expert systems
Prentice-Hall, 1991
 Buku Teks SO
Luger, George F.
Artificial intelligence : and the design of expert systems
The Benjamin/Cummings , 1989
 Buku Teks SO
Weiss, Sholom M.
A practical guide to designing expert systems
Rowman and Allanheld, 1984
 Buku Teks SO
Human Expert Knowledge Acquisition using Ternary Grid
Jurnal Teknologi, 21(3) September 2007 : 165-176, 2007
 Artikel Jurnal